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May 19, 2017 at 12:58 history edited Ivan Izmestiev CC BY-SA 3.0
deleted 1 character in body
Apr 8, 2011 at 5:58 vote accept Francesco Lin
Apr 8, 2011 at 1:48 answer added Allen Hatcher timeline score: 30
Apr 7, 2011 at 20:40 history edited Francesco Lin CC BY-SA 2.5
added 4 characters in body
Apr 7, 2011 at 20:23 history edited Francesco Lin CC BY-SA 2.5
added 140 characters in body
Apr 7, 2011 at 20:00 answer added Autumn Kent timeline score: 19
Apr 7, 2011 at 19:49 comment added Olivier Bégassat I don't know an answer to this, but why do you think that there could only be one such $S$?
Apr 7, 2011 at 19:35 history asked Francesco Lin CC BY-SA 2.5