Fri, 15 Oct 2010 17:21:37 +0100 paulson merged
Fri, 15 Oct 2010 17:21:07 +0100 paulson prevention of self-referential type environments
Fri, 15 Oct 2010 21:50:26 +0900 Cezary Kaliszyk FSet: definition changes propagated from Nominal and more use of 'descending' tactic
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