doc-src/Tutorial/ToyList/lemma3
author wenzelm
Thu, 15 Feb 2001 17:18:54 +0100
changeset 11145 3e47692e3a3e
parent 5377 efb799c5ed3c
permissions -rw-r--r--
eliminate get_def;

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