Higher nearby cycles and central sheaves on affine flag varieties

Autor:	Achar, Pramod N., Riche, Simon
Rok vydání:	2023
Předmět:	Mathematics - Algebraic Geometry Mathematics - Representation Theory
Druh dokumentu:	Working Paper
Popis:	In this paper we generalize and study a notion of (unipotent) nearby cycles over a higher dimensional base based on Be\u{i}linson's description of unipotent nearby cycles, following an idea of Gaitsgory. This generalization, in the setting of affine Grassmannians, is required in recent work of Bezrukavnikov-Braverman-Finkelberg-Kazhdan. Comment: 33 pages. v2: added lots of details, especially on \'etale sheaves
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2305.11696 Zobrazit plný text záznamu View this record from Arxiv