doc-src/Tutorial/ToyList/lemma3
author wenzelm
Mon, 03 May 1999 10:51:44 +0200
changeset 6562 ac091e18b9fc
parent 5377 efb799c5ed3c
permissions -rw-r--r--
prefer /bin for ./configure;

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