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Jun 20, 2022 at 13:17 history edited Martin Sleziak CC BY-SA 4.0
http -> https (the question was bumped anyway)
Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Oct 4, 2010 at 16:25 history edited Minhyong Kim CC BY-SA 2.5
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May 27, 2010 at 20:41 history edited Minhyong Kim CC BY-SA 2.5
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May 26, 2010 at 12:46 comment added Tyler Lawson I like the puzzle you offer very much - it leads to something far less ad-hoc than other techniques I have seen, e.g. taking the fundamental group with "basepoint" being a contractible subspace and delving into issues about loop-multiplication.
May 15, 2010 at 0:02 comment added Harold Williams Wow, thanks for the long and thoughtful answer!
May 11, 2010 at 15:38 history edited Minhyong Kim CC BY-SA 2.5
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May 10, 2010 at 14:23 history edited Minhyong Kim CC BY-SA 2.5
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May 10, 2010 at 9:00 history answered Minhyong Kim CC BY-SA 2.5