doc-src/Tutorial/ToyList/lemma3
author paulson
Tue, 17 Feb 2004 10:41:59 +0100
changeset 14390 55fe71faadda
parent 5377 efb799c5ed3c
permissions -rw-r--r--
further tweaks to the numeric theories

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