doc-src/Tutorial/ToyList/lemma3
author wenzelm
Thu, 27 Jul 2000 18:23:12 +0200
changeset 9450 c97dba47e504
parent 5377 efb799c5ed3c
permissions -rw-r--r--
tuned;

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