Wed, 23 Feb 2005 15:19:00 +0100 berghofe Modified node_trans to avoid duplication of signature stamps
Wed, 23 Feb 2005 15:00:03 +0100 webertj exception SAME removed
Wed, 23 Feb 2005 14:04:53 +0100 webertj major code change: refute can now handle recursion and axiomatic type classes; 3-valued logic with two kinds of equality; some bugfixes
Wed, 23 Feb 2005 10:23:22 +0100 nipkow suminf -> \<Sum>
Tue, 22 Feb 2005 18:42:22 +0100 dixon Lucas - fixed bug in zero_var_indexes: it was ignoring vars in the flex-flex pairs. These are now taken into account.
Tue, 22 Feb 2005 13:05:47 +0100 paulson removed redundant lemmas and simprules
Tue, 22 Feb 2005 10:54:30 +0100 nipkow more setsum tuning
Mon, 21 Feb 2005 19:23:46 +0100 nipkow more fine tuniung
Mon, 21 Feb 2005 18:04:28 +0100 nipkow fixed proof
Mon, 21 Feb 2005 15:57:45 +0100 nipkow removed superfluous setsum_constant
Mon, 21 Feb 2005 15:04:10 +0100 nipkow comprehensive cleanup, replacing sumr by setsum
Sat, 19 Feb 2005 18:44:34 +0100 dixon 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.
Fri, 18 Feb 2005 15:20:27 +0100 nipkow continued eliminating sumr
Fri, 18 Feb 2005 11:48:53 +0100 nipkow starting to get rid of sumr
Fri, 18 Feb 2005 11:48:42 +0100 nipkow tuning
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