doc-src/Tutorial/ToyList/lemma3
author nipkow
Thu, 24 Feb 2000 08:55:37 +0100
changeset 8287 42911a6bb13f
parent 5377 efb799c5ed3c
permissions -rw-r--r--
Added and renamed a lemma.

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