 reserve x,y,z for object,
   i,j,k,l,n,m for Nat,
   D,E for non empty set;
 reserve M for Matrix of D;
 reserve L for Matrix of E;

theorem INTTOREAL:
  for M being Matrix of INT
  holds M is Matrix of REAL
  proof
    let M be Matrix of INT;
    INT* c= REAL* by NUMBERS:15,FINSEQ_1:62;
    then rng M c= REAL*;
    hence thesis by FINSEQ_1:def 4;
  end;
