doc-src/Tutorial/ToyList/lemma1
author paulson
Fri, 26 Sep 2003 10:34:57 +0200
changeset 14208 144f45277d5a
parent 5377 efb799c5ed3c
permissions -rw-r--r--
misc tidying

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