/*
 * @(#)$Id: double1,v 1.1 1994/09/16 09:38:16 dream Exp $
 *
 * $Log: double1,v $
 * Revision 1.1  1994/09/16 09:38:16  dream
 * Initial revision
 *
 */

problem([]==>double(0)=0 in pnat,
simplify then repeat intro,axiom,
[
]).
