src/HOL/Library/Ring_and_Field_Example.thy
Fri, 05 Oct 2001 21:52:39 +0200 wenzelm sane numerals (stage 1): added generic 1, removed 1' and 2 on nat,
Sat, 20 Jan 2001 00:32:56 +0100 wenzelm added Library/Ring_and_Field_Example.thy;
less more (0) tip