Tue, 13 Dec 2011 20:10:36 +0100 wenzelm tuned;
Tue, 13 Dec 2011 20:10:28 +0100 wenzelm removed dead code;
Tue, 13 Dec 2011 20:10:11 +0100 wenzelm comment;
Tue, 13 Dec 2011 16:53:28 +0100 nipkow connect while_option with lfp
Tue, 13 Dec 2011 16:14:41 +0100 nipkow lemmas about Kleene iteration
Tue, 13 Dec 2011 15:19:30 +0100 wenzelm merged
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