Sun, 15 Aug 2010 11:03:13 +0800 Christian Urban simplified code
Sat, 14 Aug 2010 23:33:23 +0800 Christian Urban improved code
Sat, 14 Aug 2010 16:54:41 +0800 Christian Urban more experiments with lifting
Thu, 12 Aug 2010 21:29:35 +0800 Christian Urban updated to Isabelle 12th Aug
(0) -1000 -300 -100 -30 -10 -4 +4 +10 +30 +100 +300 tip