Tue, 03 Jan 2012 11:43:27 +0000 updated to explicit set type constructor (post Isabelle 3rd January)
Christian Urban <urbanc@in.tum.de> [Tue, 03 Jan 2012 11:43:27 +0000] rev 3104
updated to explicit set type constructor (post Isabelle 3rd January)
Tue, 03 Jan 2012 01:42:10 +0000 proved that generalisation is closed under substitution
Christian Urban <urbanc@in.tum.de> [Tue, 03 Jan 2012 01:42:10 +0000] rev 3103
proved that generalisation is closed under substitution
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