Timeline for Splitting field of a root vector $x_{\alpha}: \mathbf{G}_a \rightarrow U_{\alpha}$

11 events

when toggle format	what		by	license	comment
Apr 13, 2017 at 12:58	history	edited	CommunityBot		replaced http://mathoverflow.net/ with https://mathoverflow.net/
Feb 14, 2017 at 14:08	comment	added	D_S		Sorry, I mean roots of the maximal torus $T$ (absolute roots).
Feb 14, 2017 at 7:51	comment	added	nfdc23		What is a "non-restricted" root? (I can never remember this kind of terminology. To me everything in a root system is called a root, and one has the relative root system and absolute root system; anything else I cannot remember.)
Feb 14, 2017 at 3:26	comment	added	D_S		There are still parts of your answer I'm trying to understand. In the meantime, I want to ask: if $\alpha$ is a nonrestricted root, does it always suffice to define the splitting field $F_{\alpha}$ as the fixed field of the stabilize of $\alpha$ under the action of $\Gamma$?
Dec 4, 2016 at 22:14	history	edited	nfdc23	CC BY-SA 3.0	fixed some minor typos
Dec 4, 2016 at 19:19	vote	accept	D_S
Dec 3, 2016 at 13:20	history	edited	nfdc23	CC BY-SA 3.0	reorganized for more clarity, minor editing.
Dec 3, 2016 at 7:09	history	edited	nfdc23	CC BY-SA 3.0	deleted 28 characters in body
Dec 3, 2016 at 5:51	history	edited	nfdc23	CC BY-SA 3.0	added 761 characters in body
S Dec 3, 2016 at 5:13	history	answered	nfdc23	CC BY-SA 3.0
S Dec 3, 2016 at 5:13	history	made wiki			Post Made Community Wiki by nfdc23