doc-src/Tutorial/ToyList/lemma3
author webertj
Thu, 17 Jun 2004 21:58:51 +0200
changeset 14964 2c1456d705e9
parent 5377 efb799c5ed3c
permissions -rw-r--r--
improved defcnf conversion

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