reserve i,j,n,n1,n2,m,k,l,u for Nat,
        r,r1,r2 for Real,
        x,y for Integer,
        a,b for non trivial Nat,
        F for XFinSequence,
        cF,cF1,cF2 for complex-valued XFinSequence,
        c,c1,c2 for Complex;

theorem Th7:
  Product(cF1^cF2) = Product(cF1) * Product(cF2)
proof
  thus Product(cF1^cF2)=multcomplex.(Product cF1,Product cF2)
      by AFINSQ_2:42
    .= Product(cF1)*Product(cF2) by BINOP_2:def 5;
end;
