doc-src/Tutorial/ToyList/lemma1
author wenzelm
Wed, 28 Nov 2001 23:31:47 +0100
changeset 12318 72348ff7d4a0
parent 5377 efb799c5ed3c
permissions -rw-r--r--
skip_proof: do not require quick_and_dirty in interactive mode;

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