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Mar 1, 2023 at 16:35 answer added Julian Newman timeline score: 1
Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
May 27, 2015 at 4:57 vote accept Tom LaGatta
May 19, 2015 at 14:32 answer added David Spivak timeline score: 16
Feb 10, 2013 at 9:25 answer added Andrej Bauer timeline score: 1
Feb 10, 2013 at 6:27 history edited Tom LaGatta CC BY-SA 3.0
deleted 7 characters in body
Feb 10, 2013 at 6:27 comment added Tom LaGatta Thanks @Paul McKenney. It was a typo: Alexandroff spaces contain arbitrary unions of closed sets.
Feb 10, 2013 at 4:01 comment added Paul McKenney Tom, I don't think you mean what you said about Alexandroff spaces; arbitrary intersections of closed sets are always closed, in a topological space.
Feb 6, 2013 at 6:03 history asked Tom LaGatta CC BY-SA 3.0