/*
 * @(#)$Id: half2,v 1.1 1994/09/16 09:38:16 dream Exp $
 *
 * $Log: half2,v $
 * Revision 1.1  1994/09/16 09:38:16  dream
 * Initial revision
 *
 */

problem([]==>half(s(0))=0 in pnat,
simplify,_7453,
[problem([]==>0=0 in pnat,
 identity,axiom,
 [
 ]) ext _7453
]).
