doc-src/Tutorial/ToyList/lemma3
author paulson
Wed, 09 Jun 2004 11:19:23 +0200
changeset 14890 51f28df21c8b
parent 5377 efb799c5ed3c
permissions -rw-r--r--
fixed the skolemize method

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