doc-src/Tutorial/ToyList/lemma3
author kleing
Tue, 02 Mar 2004 01:32:23 +0100
changeset 14422 b8da5f258b04
parent 5377 efb799c5ed3c
permissions -rw-r--r--
converted to Isar

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