Mon, 22 Jan 2001 17:26:19 +0100 paulson deleted several obsolete lemmas from NatArith.ML
Mon, 22 Jan 2001 11:46:25 +0100 paulson tidied using arith_tac
Mon, 22 Jan 2001 11:45:57 +0100 paulson deleted obsolete theorems
Mon, 22 Jan 2001 11:45:29 +0100 paulson tided
Mon, 22 Jan 2001 11:02:53 +0100 paulson arg_cong example; tidying to use @subgoals
Mon, 22 Jan 2001 11:01:49 +0100 paulson rename_tac example; tidying to use @subgoals
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