doc-src/Tutorial/ToyList/lemma3
author berghofe
Tue, 05 Oct 1999 15:31:42 +0200
changeset 7721 cb353d802ade
parent 5377 efb799c5ed3c
permissions -rw-r--r--
Tuned inductive definition.

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