Wed, 20 Jan 2016 00:06:48 +0100 wenzelm tuned;
Tue, 19 Jan 2016 14:00:47 +0100 wenzelm tuned;
Tue, 19 Jan 2016 11:46:54 +0100 nipkow tuned
Tue, 19 Jan 2016 11:36:09 +0100 nipkow merged
Tue, 19 Jan 2016 11:36:02 +0100 nipkow added lemma
Tue, 19 Jan 2016 11:19:25 +0100 Manuel Eberl Added approximation of powr to NEWS/CONTRIBUTORS
Tue, 19 Jan 2016 07:59:29 +0100 Manuel Eberl Made Approximation work for powr again
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