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Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Oct 20, 2010 at 0:33 vote accept Agustí Roig
Oct 19, 2010 at 10:14 answer added D.-C. Cisinski timeline score: 20
Oct 19, 2010 at 8:25 history asked Agustí Roig CC BY-SA 2.5