/*
 * @(#)$Id: length2,v 1.1 1994/09/16 09:38:16 dream Exp $
 *
 * $Log: length2,v $
 * Revision 1.1  1994/09/16 09:38:16  dream
 * Initial revision
 *
 */

problem([]==>h:int=>l:int list=>length(h::l)=s(length(l))in pnat,
repeat intro then simplify,lambda(h,lambda(l,axiom)),
[
]).
