doc-src/Tutorial/ToyList/lemma3
author wenzelm
Wed, 03 Oct 2001 21:03:05 +0200
changeset 11659 a68f930bafb2
parent 5377 efb799c5ed3c
permissions -rw-r--r--
Tools/induct_attrib.ML now part of Pure;

Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
by(induct_tac "xs" 1);
by(Auto_tac);