reserve T, X, Y for Subset of MC-wff;
reserve p, q, r, s for Element of MC-wff;
reserve T, X, Y for Subset of MC-wff;
reserve p, q, r for Element of MC-wff;

theorem
  T is CPC_theory implies CPC-Taut c= T
proof
  assume
A1: T is CPC_theory;
  CPC-Taut c= CnCPC(T) by Th73,XBOOLE_1:2;
  hence thesis by A1,Th75;
end;
