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Jan 11, 2013 at 13:47 comment added alvarezpaiva I see. Are you just looking for the the definition and uses of Alexandrov's one point compactification?
Jan 10, 2013 at 23:52 comment added Pablo Well, I knew that. I don't know if my questions doesn't have an answer but what I was looking for is for the reasaon of the operation of ''collapsing the emptyset to one point'' or, stating it differently, if that is the way it is extended in other cases.
Jan 10, 2013 at 23:43 vote accept Pablo
Jan 10, 2013 at 23:49
Jan 10, 2013 at 23:40 history answered alvarezpaiva CC BY-SA 3.0