Thu, 08 Jan 2009 12:25:22 -0800 remove type-specific proofs
huffman [Thu, 08 Jan 2009 12:25:22 -0800] rev 29410
remove type-specific proofs
Thu, 08 Jan 2009 10:43:09 -0800 add lemma dvd_diff to class comm_ring_1
huffman [Thu, 08 Jan 2009 10:43:09 -0800] rev 29409
add lemma dvd_diff to class comm_ring_1
Thu, 08 Jan 2009 10:26:50 -0800 add lemmas dvd_minus_iff and minus_dvd_iff in class comm_ring_1
huffman [Thu, 08 Jan 2009 10:26:50 -0800] rev 29408
add lemmas dvd_minus_iff and minus_dvd_iff in class comm_ring_1
Thu, 08 Jan 2009 10:07:39 -0800 move lemmas mult_minus{left,right} inside class ring
huffman [Thu, 08 Jan 2009 10:07:39 -0800] rev 29407
move lemmas mult_minus{left,right} inside class ring
(0) -10000 -3000 -1000 -300 -100 -30 -10 -4 +4 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip