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when toggle format what by license comment
Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Jun 24, 2013 at 18:41 answer added Peter Michor timeline score: 2
Jun 22, 2013 at 8:55 history asked Ma Ming CC BY-SA 3.0