(************************************************************************)
(* Copyright 2006 Milad Niqui                                           *)
(* This file is distributed under the terms of the                      *)
(* GNU Lesser General Public License Version 2.1                        *)
(* A copy of the license can be found at                                *)
(*                  <http://www.gnu.org/licenses/lgpl-2.1.html>         *)
(************************************************************************)
Require Export Qsyntax.
Require Export Field_Theory_Q.
Definition Qmult_Qinv_l:= Qinv_defT.

Lemma Qdiv_Qopp_denomintor: forall x y : Q, y<> Zero -> Qdiv x (-y) = - (Qdiv x  y).