doc-src/Tutorial/ToyList/lemma3
author berghofe
Mon, 12 May 2003 13:51:50 +0200
changeset 14008 f843528b9f3c
parent 5377 efb799c5ed3c
permissions -rw-r--r--
Program extraction framework.

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