src/HOL/Isar_Examples/Mutilated_Checkerboard.thy
Sun, 02 Nov 2014 17:23:48 +0100 wenzelm modernized header;
Tue, 07 Oct 2014 20:59:46 +0200 wenzelm more cartouches;
Fri, 21 Feb 2014 18:23:11 +0100 wenzelm more symbols;
Tue, 21 Feb 2012 22:50:28 +0100 wenzelm misc tuning;
Wed, 28 Dec 2011 20:03:13 +0100 wenzelm reverted some changes for set->predicate transition, according to "hg log -u berghofe -r Isabelle2007:Isabelle2008";
Thu, 02 Dec 2010 17:20:34 +0100 wenzelm more antiquotations;
Thu, 01 Jul 2010 18:31:46 +0200 wenzelm misc tuning and modernization;
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