src/HOL/Decision_Procs/ex/Commutative_Ring_Ex.thy
Sun, 03 Dec 2017 22:28:19 +0100 wenzelm misc tuning and modernization;
Sun, 29 Jan 2017 11:59:48 +0100 berghofe Added new / improved tactics for fields and rings
Sat, 20 Jun 2015 16:31:44 +0200 wenzelm isabelle update_cartouches;
Sun, 02 Nov 2014 18:21:45 +0100 wenzelm modernized header uniformly as section;
Mon, 03 Sep 2012 09:15:58 +0200 wenzelm tuned proofs;
Tue, 24 Jul 2012 17:34:46 +0200 wenzelm modernized imports;
Fri, 30 Oct 2009 13:59:49 +0100 haftmann moved Commutative_Ring into session Decision_Procs
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