berghofe [Wed, 23 Feb 2005 15:19:00 +0100] rev 15549
Modified node_trans to avoid duplication of signature stamps
when undoing.
webertj [Wed, 23 Feb 2005 15:00:03 +0100] rev 15548
exception SAME removed
webertj [Wed, 23 Feb 2005 14:04:53 +0100] rev 15547
major code change: refute can now handle recursion and axiomatic type classes; 3-valued logic with two kinds of equality; some bugfixes
nipkow [Wed, 23 Feb 2005 10:23:22 +0100] rev 15546
suminf -> \<Sum>
dixon [Tue, 22 Feb 2005 18:42:22 +0100] rev 15545
Lucas - fixed bug in zero_var_indexes: it was ignoring vars in the flex-flex pairs. These are now taken into account.
paulson [Tue, 22 Feb 2005 13:05:47 +0100] rev 15544
removed redundant lemmas and simprules
nipkow [Tue, 22 Feb 2005 10:54:30 +0100] rev 15543
more setsum tuning
nipkow [Mon, 21 Feb 2005 19:23:46 +0100] rev 15542
more fine tuniung
nipkow [Mon, 21 Feb 2005 18:04:28 +0100] rev 15541
fixed proof
nipkow [Mon, 21 Feb 2005 15:57:45 +0100] rev 15540
removed superfluous setsum_constant
nipkow [Mon, 21 Feb 2005 15:04:10 +0100] rev 15539
comprehensive cleanup, replacing sumr by setsum
dixon [Sat, 19 Feb 2005 18:44:34 +0100] rev 15538
lucas - re-arranged code and added comments. Also added check to make sure the subgoal that we are being applied to exists. If it does not, empty seq is returned.
nipkow [Fri, 18 Feb 2005 15:20:27 +0100] rev 15537
continued eliminating sumr
nipkow [Fri, 18 Feb 2005 11:48:53 +0100] rev 15536
starting to get rid of sumr
nipkow [Fri, 18 Feb 2005 11:48:42 +0100] rev 15535
tuning