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Jan 11, 2016 at 19:50 comment added Igor Rivin Chebotarev is applied to the polynomial $x^n-q.$ Mod most primes this has no linear factor, so $q$ is not an $n$-th power.
Jan 11, 2016 at 18:58 comment added Alex @GerryMyerson I apologize, what exactly would Chebotarev's be applied to?
Jul 21, 2015 at 1:28 history edited Igor Rivin CC BY-SA 3.0
fixed typo
Jul 21, 2015 at 1:27 vote accept Alex
Jul 21, 2015 at 1:20 history answered Igor Rivin CC BY-SA 3.0