Tue, 01 Sep 1998 15:03:43 +0200 paulson tidying; moved diff_less to Arith.ML
Tue, 01 Sep 1998 15:03:10 +0200 paulson changed Suc_diff_n to Suc_diff_le, with premise n <= m instead of n < Suc(m)
Tue, 01 Sep 1998 10:25:05 +0200 paulson New lemmas involving Int
(0) -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip