src/ZF/ex/Ring.thy
Fri, 17 Nov 2006 02:20:03 +0100 wenzelm more robust syntax for definition/abbreviation/notation;
Tue, 07 Nov 2006 19:40:13 +0100 wenzelm tuned specifications;
Mon, 05 Sep 2005 16:47:28 +0200 wenzelm removed duplicate theorems;
Fri, 17 Jun 2005 16:12:49 +0200 haftmann migrated theory headers to new format
Tue, 08 Jun 2004 16:22:30 +0200 paulson Groups, Rings and supporting lemmas
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