Mon, 11 Sep 2006 14:28:47 +0200 haftmann hid succ, pred in Numeral.thy
Mon, 11 Sep 2006 12:27:36 +0200 wenzelm updated;
Mon, 11 Sep 2006 12:27:30 +0200 wenzelm more rules;
Mon, 11 Sep 2006 12:27:21 +0200 wenzelm tuned;
Sun, 10 Sep 2006 05:34:24 +0200 huffman added axclass division_ring (like field without commutativity; includes e.g. quaternions) and generalized some theorems from field to division_ring
Sat, 09 Sep 2006 18:28:42 +0200 huffman cleaned up
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