doc-src/Tutorial/ToyList/lemma3
author wenzelm
Mon, 22 Oct 2001 18:01:38 +0200
changeset 11886 36d0585f87de
parent 5377 efb799c5ed3c
permissions -rw-r--r--
Display.pretty_thms;

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