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-(************************************************************************)
-(* v * The Coq Proof Assistant / The Coq Development Team *)
-(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
-(* \VV/ **************************************************************)
-(* // * This file is distributed under the terms of the *)
-(* * GNU Lesser General Public License Version 2.1 *)
-(************************************************************************)
-
-(* Certification of Imperative Programs / Jean-Christophe Filliātre *)
-
-(* $Id: ProgInt.v,v 1.1.2.1 2004/07/16 19:30:16 herbelin Exp $ *)
-
-Require Export ZArith.
-Require Export ZArith_dec.
-
-Theorem Znotzero : (x:Z){`x<>0`}+{`x=0`}.
-Proof.
-Intro x. Elim (Z_eq_dec x `0`) ; Auto.
-Save.