Timeline for Convex Hulls of Demazure Modules
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 28, 2019 at 18:54 | comment | added | Marc Besson | This follows from Theorem 2.9 in their paper "Schubert Cells and cohomology of the spaces G/P" | |
| May 26, 2019 at 8:44 | comment | added | Sankaran Viswanath | >>If $P(V^w_\lambda)$ denotes the set of weights which appear in the Demazure module, I can consider the convex hull in $X^* \otimes_\mathbb{Z} \mathbb{R}$. The extremal vertices of the resulting polytope will be $w'(\lambda)$ for $w' \leq w$ via an argument of Bernstein, Gelfand and Gelfand.<< I am not sure if it is appropriate to pose this question here (apologies if it isn't), but would you happen to know the exact reference to Bernstein-Gelfand-Gelfand's argument which proves the above statement ? | |
| May 4, 2019 at 13:12 | vote | accept | Marc Besson | ||
| May 4, 2019 at 7:54 | history | became hot network question | |||
| May 4, 2019 at 6:51 | answer | added | Per Alexandersson | timeline score: 3 | |
| May 4, 2019 at 2:57 | history | asked | Marc Besson | CC BY-SA 4.0 |