doc-src/Tutorial/ToyList/lemma1
author wenzelm
Fri, 05 May 2000 22:23:27 +0200
changeset 8809 85539b33be03
parent 5377 efb799c5ed3c
permissions -rw-r--r--
updated;

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