Timeline for Galois correspondence for action of general linear group on purely transcendental extension
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
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| Jan 15, 2014 at 19:54 | comment | added | KConrad | One subgroup of your $G$ is $S_n$, acting on the variables $t_i$ as permutations. The nature of the fixed field of your $K$ by subgroups of $S_n$ is subtle. See a theorem of Swan at en.wikipedia.org/wiki/Rational_variety (note $K$ there is your $\mathbf C$, and $L$ there is your $K$, more or less). | |
| Jan 15, 2014 at 19:25 | history | asked | Julian Rosen | CC BY-SA 3.0 |