doc-src/Tutorial/ToyList/lemma1
author wenzelm
Sun, 13 Feb 2000 20:56:55 +0100
changeset 8235 a4fb9be6b19a
parent 5377 efb799c5ed3c
permissions -rw-r--r--
prf_script commands made proper; removed then_apply; added apply_end;

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