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when toggle format what by license comment
Oct 26, 2012 at 11:36 answer added Klaus Draeger timeline score: 1
Oct 26, 2012 at 6:16 answer added Federico Poloni timeline score: 0
Oct 25, 2012 at 22:02 comment added Gerry Myerson Identical question posted to m.se, math.stackexchange.com/questions/221134/… --- voting to close.
Oct 25, 2012 at 21:58 history edited youming CC BY-SA 3.0
added 78 characters in body; edited tags
Oct 25, 2012 at 21:48 history asked youming CC BY-SA 3.0