Normality of Schubert varieties in affine Grassmannians

Autor:	Bieker, Patrick, Richarz, Timo
Rok vydání:	2023
Předmět:	Mathematics - Algebraic Geometry Mathematics - Representation Theory
Druh dokumentu:	Working Paper
Popis:	We classify all normal Schubert varieties in the affine Grassmannian of a semisimple group over an arbitrary field with special attention to small positive characteristic. The proof is elementary and relies on tangent space calculations for quasi-minuscule Schubert varieties, a refined Levi lemma in positive characteristic and the classification of minimal degenerations Comment: Comments welcome!
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2312.11154 Zobrazit plný text záznamu View this record from Arxiv