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Registered User
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Dec 1 |
comment |
algebraic groups and their Lie algebras @Jim Humphreys: Thanks for the kind words. The argument I give also works without change if ${\rm{GL}}(V)$ is replaced with any linear algebraic $k$-group. I'm not sure how the argument in D-G may differ from this, as I have always avoided looking at anything in D-G whenever possible. |
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Nov 30 |
comment |
algebraic groups and their Lie algebras @Andriy: Your necessity comment beyond the connected semisimple case above is not quite true: things work well for unipotent groups too (as noted at the end of my answer below). |
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Nov 30 |
revised |
algebraic groups and their Lie algebras added 290 characters in body |
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Nov 30 |
answered | algebraic groups and their Lie algebras |
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Nov 27 |
accepted | Is the normalizer of a reductive subgroup reductive? |
