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Apr 24, 2013 at 13:10 vote accept Mihail Matrix
Apr 23, 2013 at 10:34 vote accept Mihail Matrix
Apr 23, 2013 at 10:35
Apr 21, 2013 at 18:39 answer added Peter Michor timeline score: 2
Apr 21, 2013 at 17:56 history asked Mihail Matrix CC BY-SA 3.0