doc-src/Tutorial/ToyList/lemma3
author wenzelm
Mon, 04 Dec 2000 23:18:07 +0100
changeset 10582 49ebade930ea
parent 5377 efb799c5ed3c
permissions -rw-r--r--
fixed binding of parameters;

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