:: GROUP_11 semantic presentation

begin

theorem :: GROUP_11:1
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x1, x2 being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) holds (x1 : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) * (x2 : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) = (x1 : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * x2 : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) ) : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) * N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:2
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x, y being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st y : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) = y : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:3
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets carr H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) holds
ex y being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st
( y : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & y : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) ;

theorem :: GROUP_11:4
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for x, y being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) )
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st y : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds
(x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * y : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) ) : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) * (x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) ") : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) in N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ;

theorem :: GROUP_11:5
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st ( for x, y being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st y : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds
(x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * y : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) ) : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) * (x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) ") : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is normal ;

theorem :: GROUP_11:6
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H1, H2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) holds
( x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) iff ex a, b being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st
( x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) = a : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * b : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) & a : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) & b : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) ) ;

theorem :: GROUP_11:7
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex M being ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st the carrier of M : ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:8
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex M being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st the carrier of M : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:9
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st the carrier of N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) holds
( N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) & N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) ) ;

theorem :: GROUP_11:10
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1, N2 being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for a, b being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st the carrier of N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) holds
(a : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) * (b : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N2 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) = (a : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * b : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) ) : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) * N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:11
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) holds (x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) * (x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) ") : ( ( ) ( ) Element of the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= carr N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

definition
let G be ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ;
let A be ( ( ) ( ) Subset of ) ;
let N be ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ;
func N ` A -> ( ( ) ( ) Subset of ) equals :: GROUP_11:def 1
{ x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) where x is ( ( ) ( ) Element of ( ( ) ( ) set ) ) : x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( ) Element of G : ( ( ) ( ) 2-sorted ) ) : ( ( ) ( ) Element of K19( the carrier of G : ( ( ) ( ) 2-sorted ) : ( ( ) ( ) set ) ) : ( ( ) ( ) set ) ) c= A : ( ( ) ( ) set ) } ;
func N ~ A -> ( ( ) ( ) Subset of ) equals :: GROUP_11:def 2
{ x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) where x is ( ( ) ( ) Element of ( ( ) ( ) set ) ) : x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( ) Element of G : ( ( ) ( ) 2-sorted ) ) : ( ( ) ( ) Element of K19( the carrier of G : ( ( ) ( ) 2-sorted ) : ( ( ) ( ) set ) ) : ( ( ) ( ) set ) ) meets A : ( ( ) ( ) set ) } ;
end;

theorem :: GROUP_11:12
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= A : ( ( non empty ) ( non empty ) Subset of ) ;

theorem :: GROUP_11:13
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= A : ( ( non empty ) ( non empty ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:14
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets A : ( ( non empty ) ( non empty ) Subset of ) ;

theorem :: GROUP_11:15
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets A : ( ( non empty ) ( non empty ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:16
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= A : ( ( non empty ) ( non empty ) Subset of ) ;

theorem :: GROUP_11:17
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds A : ( ( non empty ) ( non empty ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:18
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:19
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (A : ( ( non empty ) ( non empty ) Subset of ) \/ B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( non empty ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) = (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) \/ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:20
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (A : ( ( non empty ) ( non empty ) Subset of ) /\ B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) = (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) /\ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:21
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st A : ( ( non empty ) ( non empty ) Subset of ) c= B : ( ( non empty ) ( non empty ) Subset of ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` B : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:22
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st A : ( ( non empty ) ( non empty ) Subset of ) c= B : ( ( non empty ) ( non empty ) Subset of ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ B : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:23
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) \/ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (A : ( ( non empty ) ( non empty ) Subset of ) \/ B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( non empty ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:24
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (A : ( ( non empty ) ( non empty ) Subset of ) \/ B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( non empty ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) = (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) \/ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:25
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:26
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:27
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds (N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) * (N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (A : ( ( non empty ) ( non empty ) Subset of ) * B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:28
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (A : ( ( non empty ) ( non empty ) Subset of ) * B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets A : ( ( non empty ) ( non empty ) Subset of ) * B : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:29
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A, B being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds (N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) * (N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (A : ( ( non empty ) ( non empty ) Subset of ) * B : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:30
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:31
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:32
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:33
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:34
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) = N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:35
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) = N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:36
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:37
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) c= A : ( ( non empty ) ( non empty ) Subset of ) ;

theorem :: GROUP_11:38
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) = N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:39
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st A : ( ( non empty ) ( non empty ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:40
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) = N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:41
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:42
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) = N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:43
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) = N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:44
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N, N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) = N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) /\ N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= (N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) /\ (N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:45
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N, N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) = N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) /\ N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds
(N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) /\ (N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:46
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= (N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) /\ (N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ) ;

theorem :: GROUP_11:47
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & (N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) \/ (N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:48
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for A being ( ( non empty ) ( non empty ) Subset of )
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) : ( ( ) ( ) Subset of ) c= ((N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) /\ ((N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ A : ( ( non empty ) ( non empty ) Subset of ) ) : ( ( ) ( ) Subset of ) * N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ) ;

definition
let G be ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ;
let H, N be ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ;
func N ` H -> ( ( ) ( ) Subset of ) equals :: GROUP_11:def 3
{ x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) where x is ( ( ) ( ) Element of ( ( ) ( ) set ) ) : x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( ) Element of G : ( ( ) ( ) 2-sorted ) ) : ( ( ) ( ) Element of K19( the carrier of G : ( ( ) ( ) 2-sorted ) : ( ( ) ( ) set ) ) : ( ( ) ( ) set ) ) c= carr H : ( ( ) ( ) set ) : ( ( ) ( ) Element of K19( the carrier of G : ( ( ) ( ) 2-sorted ) : ( ( ) ( ) set ) ) : ( ( ) ( ) set ) ) } ;
func N ~ H -> ( ( ) ( ) Subset of ) equals :: GROUP_11:def 4
{ x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) where x is ( ( ) ( ) Element of ( ( ) ( ) set ) ) : x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( ) Element of G : ( ( ) ( ) 2-sorted ) ) : ( ( ) ( ) Element of K19( the carrier of G : ( ( ) ( ) 2-sorted ) : ( ( ) ( ) set ) ) : ( ( ) ( ) set ) ) meets carr H : ( ( ) ( ) set ) : ( ( ) ( ) Element of K19( the carrier of G : ( ( ) ( ) 2-sorted ) : ( ( ) ( ) set ) ) : ( ( ) ( ) set ) ) } ;
end;

theorem :: GROUP_11:49
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= carr H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:50
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= carr H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:51
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets carr H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:52
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for x being ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) st x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) * N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) meets carr H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) holds
x : ( ( ) ( ) Element of ( ( ) ( non empty ) set ) ) in N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:53
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= carr H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:54
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H, N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds carr H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:55
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:56
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H1, H2, N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:57
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H, N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:58
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:59
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H1, H2, N being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:60
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H, N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:61
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:62
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H1, H2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds (N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) * (N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` (H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:63
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H1, H2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds (N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) * (N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ (H1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * H2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:64
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H, N, N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) = N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) /\ N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds
N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= (N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) /\ (N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ;

theorem :: GROUP_11:65
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H, N, N1, N2 being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) = N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) /\ N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) holds
(N1 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) /\ (N2 : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:66
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= (N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) /\ (N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ) ;

theorem :: GROUP_11:67
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & (N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) \/ (N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:68
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & (N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) * (N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:69
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & (N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) * (N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) c= N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:70
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N1, N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) & N : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= ((N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) * N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) /\ ((N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Subset of ) * N1 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) : ( ( ) ( ) Element of K19( the carrier of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) : ( ( ) ( non empty ) set ) ) : ( ( ) ( ) set ) ) ) ;

theorem :: GROUP_11:71
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex M being ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st the carrier of M : ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:72
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H being ( ( ) ( non empty unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) )
for N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
ex M being ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st the carrier of M : ( ( strict ) ( non empty strict unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( ) ( non empty unital Group-like V103() ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:73
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H, N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex M being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st the carrier of M : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ H : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:74
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for H, N being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of H : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
ex M being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st the carrier of M : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` H : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ;

theorem :: GROUP_11:75
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1 being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
ex N2, N3 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & the carrier of N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:76
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1 being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
ex N2, N3 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & the carrier of N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:77
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1 being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
ex N2, N3 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & the carrier of N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:78
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1 being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
ex N2, N3 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & the carrier of N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:79
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1, N2 being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) is ( ( ) ( non empty unital Group-like V103() ) Subgroup of N2 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ) holds
ex N3, N4 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & the carrier of N4 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N2 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & N3 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N4 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:80
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1 being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ` N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;

theorem :: GROUP_11:81
for G being ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group)
for N, N1 being ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ex N2 being ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of G : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) st
( the carrier of N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( non empty ) set ) = N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) & N : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) c= N2 : ( ( strict normal ) ( non empty strict unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) ~ N1 : ( ( normal ) ( non empty unital Group-like V103() normal ) Subgroup of b1 : ( ( non empty Group-like V103() ) ( non empty unital Group-like V103() ) Group) ) : ( ( ) ( ) Subset of ) ) ;