src/HOL/Isar_examples/Group.thy
Mon, 22 May 2000 12:05:23 +0200 wenzelm tuned;
Sat, 30 Oct 1999 20:20:48 +0200 wenzelm improved presentation;
Thu, 28 Oct 1999 19:57:34 +0200 wenzelm improved presentation;
Fri, 15 Oct 1999 16:44:37 +0200 wenzelm improved presentation;
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