doc-src/Tutorial/ToyList/lemma3
author kleing
Thu, 22 Feb 2001 11:47:35 +0100
changeset 11177 749fd046002f
parent 5377 efb799c5ed3c
permissions -rw-r--r--
removed unused function

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