Myhill_2.thy
Sat, 19 Feb 2011 17:10:46 +0000 urbanc first proof
Sat, 19 Feb 2011 12:01:16 +0000 urbanc updated second direction
Fri, 18 Feb 2011 12:14:07 +0000 urbanc polished everything
Thu, 17 Feb 2011 21:30:26 +0000 urbanc more on the conclusion
less more (0) -4 tip