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Timeline for Cyclic extensions

Current License: CC BY-SA 2.5

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Apr 9, 2014 at 16:48 comment added David E Speyer You may be looking for Kummer's theorem: If $n$ is relatively prime to the characteristic of $K$, and $x^n-1$ splits in $K$, THEN every degree $n$ cyclic extension of $K$ is of the form $L=K(a)$ with $a^n \in K$. The answers below indicate why each hypothesis is needed.
Dec 12, 2012 at 8:16 answer added P Vanchinathan timeline score: 5
Jun 2, 2010 at 16:04 vote accept Randomblue
May 14, 2010 at 14:29 answer added Georges Elencwajg timeline score: 9
May 14, 2010 at 14:07 answer added George McNinch timeline score: 2
May 14, 2010 at 12:20 answer added David Loeffler timeline score: 16
May 14, 2010 at 12:18 comment added Franz Lemmermeyer Any cyclic cubic extension of the rationals will do.
May 14, 2010 at 11:52 history asked Randomblue CC BY-SA 2.5