doc-src/Tutorial/ToyList/lemma3
author nipkow
Sat, 11 Sep 2004 09:25:47 +0200
changeset 15198 44495334adcc
parent 5377 efb799c5ed3c
permissions -rw-r--r--
antisymmetry simproc

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