doc-src/Tutorial/ToyList/lemma3
author wenzelm
Fri, 03 Mar 2000 21:00:58 +0100
changeset 8335 4c117393e4e6
parent 5377 efb799c5ed3c
permissions -rw-r--r--
added multi_resolveq, resolveq_tac;

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