Sun, 10 Oct 2010 22:50:25 +0200 krauss removed output syntax "'a ~=> 'b" for "'a => 'b option"
Wed, 13 Oct 2010 09:56:00 +0200 krauss reactivated
Tue, 12 Oct 2010 21:30:44 +0200 krauss slightly more robust proof
Mon, 11 Oct 2010 08:32:09 -0700 huffman renamed type and constant 'sfp' to 'defl'; replaced syntax SFP('a) with DEFL('a)
Mon, 11 Oct 2010 07:09:42 -0700 huffman merged
Sat, 09 Oct 2010 07:24:49 -0700 huffman move all bifinite class instances to Bifinite.thy
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