Timeline for Subgroup containing a given torus as a maximal torus
Current License: CC BY-SA 3.0
4 events
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Oct 28, 2013 at 23:21 | comment | added | Jim Humphreys | At least in the split case, I think the answer to your question is sometimes no (but would have to analyze it using the standard structure theory). It's useful to distinguish the two possible cases, where your given torus is regular or singular. In the singular case I don't see how a subgrooup $H$ can exist, even in the first nontrivial case of type $A_2$. | |
Oct 28, 2013 at 14:50 | answer | added | Michaël Le Barbier | timeline score: 1 | |
Oct 28, 2013 at 14:27 | review | First posts | |||
Oct 28, 2013 at 14:29 | |||||
Oct 28, 2013 at 14:08 | history | asked | user41972 | CC BY-SA 3.0 |