doc-src/Tutorial/ToyList/lemma1
author nipkow
Fri, 18 May 2001 12:09:13 +0200
changeset 11306 6f4ed75b2dca
parent 5377 efb799c5ed3c
permissions -rw-r--r--
added comments

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