Fri, 01 Dec 2006 12:23:53 +0100 paulson Deleted dead code
Fri, 01 Dec 2006 12:23:39 +0100 paulson Fixed a MAJOR BUG in clause-counting: only Boolean equalities now count as iffs
Thu, 30 Nov 2006 17:42:23 +0100 wenzelm notes: proper naming of thm proof, activated import_export_proof;
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