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Sep 23, 2013 at 19:55 vote accept Bo_Y
Sep 21, 2013 at 15:48 answer added Igor Belegradek timeline score: 0
Sep 21, 2013 at 7:06 comment added Ben McKay Being simply connected, it must be globally symmetric, a first step.
Sep 21, 2013 at 1:38 history asked Bo_Y CC BY-SA 3.0