Precedence_ord.thy
Fri, 22 Sep 2017 03:08:30 +0100 Christian Urban updated to Isabelle 2016-1
Wed, 06 Jan 2016 20:46:14 +0800 zhangx ExtGG.thy finished, but more comments are needed.
Thu, 15 May 2014 16:02:44 +0100 Christian Urban simplified the cp_rec proof
Thu, 06 Dec 2012 15:11:21 +0000 Christian Urban added
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