doc-src/Tutorial/ToyList/lemma3
author wenzelm
Thu, 18 Feb 1999 12:15:55 +0100
changeset 6286 ce30e19af3df
parent 5377 efb799c5ed3c
permissions -rw-r--r--
fixed order of multiple -m options;

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