doc-src/Tutorial/ToyList/lemma1
author oheimb
Wed, 14 Feb 2001 11:18:39 +0100
changeset 11114 a0c3f2082c88
parent 5377 efb799c5ed3c
permissions -rw-r--r--
added support for AddXIs, AddXEs, AddXDs

Goal "rev(xs @ ys) = (rev ys) @ (rev xs)";