doc-src/Tutorial/ToyList/lemma3
author wenzelm
Thu, 30 Mar 2000 14:21:28 +0200
changeset 8612 e8ef58d6d6eb
parent 5377 efb799c5ed3c
permissions -rw-r--r--
?this: support params;

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