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arXiv · 2305.00555

Levi-spherical Schubert varieties

Yibo Gao·Reuven Hodges·Alexander Yong
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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 a Demazure module into irreducible representations of a Levi subgroup.

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BibTeXRIS

Yibo Gao, Reuven Hodges, Alexander Yong. 2023-04-30. Levi-spherical Schubert varieties. https://doi.org/10.1016/j.aim.2024.109486

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