theorem Th34:
  for X,Y be ComplexNormSpace, f,g,h be Point of
C_NormSpace_of_BoundedLinearOperators(X,Y) holds h = f+g iff for x be VECTOR of
  X holds h.x = f.x + g.x
proof
  let X,Y be ComplexNormSpace;
  let f,g,h be Point of C_NormSpace_of_BoundedLinearOperators(X,Y);
  reconsider f1=f, g1=g, h1=h as VECTOR of
  C_VectorSpace_of_BoundedLinearOperators(X,Y);
  h=f+g iff h1=f1+g1;
  hence thesis by Th23;
end;
