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Jan 8, 2010 at 10:17 answer added D.-C. Cisinski timeline score: 25
Jan 7, 2010 at 18:12 vote accept Charles Rezk
Jan 7, 2010 at 17:57 answer added Reid Barton timeline score: 18
Jan 7, 2010 at 17:02 history edited Charles Rezk CC BY-SA 2.5
fixed "connected groupoid" -> "contractible groupoid"
Jan 7, 2010 at 16:47 history asked Charles Rezk CC BY-SA 2.5