doc-src/Tutorial/ToyList/lemma3
author wenzelm
Thu, 08 Nov 2001 00:26:06 +0100
changeset 12099 8504c948fae2
parent 5377 efb799c5ed3c
permissions -rw-r--r--
more explanations on advanced syntax;

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