isabelle: Changelog

paulson [Mon, 28 Feb 2005 13:10:36 +0100] rev 15551

unfold theorems for trancl and rtrancl

dixon [Sun, 27 Feb 2005 00:00:40 +0100] rev 15550

lucas - added more comments and an extra type to clarify the code.

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

isabelle