doc-src/Tutorial/ToyList/lemma3
author nipkow
Fri, 30 Mar 2001 18:12:26 +0200
changeset 11236 17403c5a9eb1
parent 5377 efb799c5ed3c
permissions -rw-r--r--
*** empty log message ***

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