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when toggle format what by license comment
Jun 20, 2013 at 19:03 comment added Igor Belegradek By the way, in your answer $Y$ must be Hausdorff.
Feb 13, 2013 at 17:16 comment added Igor Belegradek This is a nice observation, thanks.
Feb 13, 2013 at 16:49 history answered Ramiro de la Vega CC BY-SA 3.0