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when toggle format what by license comment
Sep 27, 2010 at 13:17 history edited JSE CC BY-SA 2.5
added 196 characters in body
Sep 27, 2010 at 12:32 comment added Kevin Buzzard It's zero when $N=2$, right? So maybe you mean "...can be zero for $N$ suff large" or something.
Sep 27, 2010 at 12:15 history answered JSE CC BY-SA 2.5