
theorem
  for K be Field, V,W be non trivial VectSp of K for f be non constant
  linear-Functional of V, g be non constant linear-Functional of W holds QForm(
  FormFunctional(f,g)) = FormFunctional(CQFunctional(f),CQFunctional(g))
proof
  let K be Field, V,W be non trivial VectSp of K, f be non constant
  linear-Functional of V, g be non constant linear-Functional of W;
A1: CQFunctional(f) <> 0Functional(VectQuot(V,Ker f));
A2: g <> 0Functional(W);
  then
A3: LQForm(FormFunctional(f,g)) = FormFunctional(CQFunctional(f),g) by Th54;
  thus QForm(FormFunctional(f,g)) = RQForm(LQForm(FormFunctional(f,g))) by Th48
    .= RQForm(FormFunctional(CQFunctional(f),g)) by A2,A3,Th54
    .= FormFunctional(CQFunctional(f),CQFunctional(g)) by A1,Th55;
end;
