doc-src/Tutorial/ToyList/lemma1
author wenzelm
Thu, 29 Nov 2001 01:51:38 +0100
changeset 12326 b4e706774e96
parent 5377 efb799c5ed3c
permissions -rw-r--r--
export primitive netpairs; activate attributes;

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