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Nov 12, 2021 at 9:15 comment added Jianrong Li thank you very much!
Nov 12, 2021 at 9:13 comment added LSpice Yes.
Nov 12, 2021 at 9:08 history edited LSpice CC BY-SA 4.0
Let's try one more time for the unipotent subgroup
Nov 12, 2021 at 9:01 comment added Jianrong Li I have a question about your notation $A^{-T}$. Does it mean $(A^{-1})^T$? Thank you very much.
Nov 12, 2021 at 8:49 vote accept Jianrong Li
Nov 12, 2021 at 8:49 comment added Jianrong Li thank you very much!
Nov 12, 2021 at 8:47 comment added LSpice And I forgot to mention it in my answer, but have now edited to correct that.
Nov 12, 2021 at 8:47 history edited LSpice CC BY-SA 4.0
$B$ is skew-symmetric
Nov 12, 2021 at 8:46 comment added Jianrong Li thank you very much for your answer! I forgot to mention in the question that $B, C$ are skew-symmetric: $B=-B^T, C=-C^T$.
Nov 12, 2021 at 8:44 history edited LSpice CC BY-SA 4.0
Oops, switched $x^{\mathsf T}$ and $y^{\mathsf T}$ again
Nov 12, 2021 at 8:38 history edited LSpice CC BY-SA 4.0
Now let's try to fix the Borel subgroup
Nov 12, 2021 at 8:20 history edited LSpice CC BY-SA 4.0
The Tits group is better than the Weyl group for understanding the embedding … maybe?
Nov 12, 2021 at 8:14 history answered LSpice CC BY-SA 4.0