doc-src/Tutorial/ToyList/lemma1
author paulson
Fri, 26 May 2000 18:05:34 +0200
changeset 8984 b71c460c6f97
parent 5377 efb799c5ed3c
permissions -rw-r--r--
addss -> force_tac

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