
theorem
  for V,W be non empty ModuleStr over F_Complex, f,g be Form of V,W
  holds (f-g)*'=f*'- g*'
proof
  let V,W be non empty ModuleStr over F_Complex, f,g be Form of V,W;
  thus (f-g)*' = f*' +(-g)*' by Th31
    .= f*'- g*' by Th32;
end;
