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Apr 13, 2017 at 12:57 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Aug 11, 2011 at 19:04 vote accept Vanessa
Aug 2, 2011 at 20:14 answer added Robert Bryant timeline score: 10
Jul 9, 2011 at 21:18 comment added André Henriques Clearly, the answer is "no" (just like the case of the circle), but I guess, you're really asking for a proof...
Jul 9, 2011 at 18:56 answer added Alex Eskin timeline score: 12
Jul 9, 2011 at 18:16 history edited Vanessa CC BY-SA 3.0
added 218 characters in body
Jul 9, 2011 at 18:03 history asked Vanessa CC BY-SA 3.0