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Nov 25, 2012 at 22:28 history edited Patricia Hersh
edited tags
Nov 21, 2012 at 5:25 vote accept Timothy Chow
Nov 21, 2012 at 1:29 answer added Richard Stanley timeline score: 19
Nov 20, 2012 at 22:39 comment added David Roberts $\pi$ is a permutation of which set? All I can tell it has a partial order... :-)
Nov 20, 2012 at 22:22 history edited José Hdz. Stgo. CC BY-SA 3.0
edited title
Nov 20, 2012 at 21:09 history edited Timothy Chow CC BY-SA 3.0
added 181 characters in body
Nov 20, 2012 at 20:01 history asked Timothy Chow CC BY-SA 3.0