src/HOL/Auth/Guard/Extensions.thy
Sun, 21 Dec 2003 08:27:44 +0100 nipkow removed insert_Diff_single from simpset because it interfered with Auth :-(
Mon, 30 Sep 2002 15:44:21 +0200 nipkow modified induct method
Wed, 21 Aug 2002 15:53:30 +0200 paulson Frederic Blanqui's new "guard" examples
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