Abstract
We prove a short, root-system uniform, combinatorial classification of Levi-spherical Schubert varieties for any generalized flag variety G/B of finite Lie type. We apply this to the study of multiplicity-free decompositions of Demazure modules and their characters.
| Original language | English (US) |
|---|---|
| Article number | #37 |
| Journal | Seminaire Lotharingien de Combinatoire |
| Issue number | 91 |
| State | Published - 2024 |
Keywords
- Demazure characters
- Levi subgroups
- multiplicity-free
- Schubert varieties
- spherical varieties
- toric varieties
ASJC Scopus subject areas
- Discrete Mathematics and Combinatorics