% Mizar problem: t80_monoid_0,monoid_0,2590,30 
fof(t80_monoid_0, conjecture,  (! [A] :  (l1_struct_0(A) =>  (v4_funct_1(u1_struct_0(A)) => v1_monoid_0(A)) ) ) ).
fof(existence_l1_struct_0, axiom,  (? [A] : l1_struct_0(A)) ).
fof(dt_l1_struct_0, axiom, $true).
fof(dt_u1_struct_0, axiom, $true).
fof(rc1_monoid_0, axiom,  (? [A] :  (l1_struct_0(A) & v1_monoid_0(A)) ) ).
