The stack of spherical Langlands parameters

Fuente: arXiv
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Autor principal: Hove, Thibaud van den
Formato: Preprint
Publicado: 2024
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author Hove, Thibaud van den
author_facet Hove, Thibaud van den
contents For a reductive group over a nonarchimedean local field, we define the stack of spherical Langlands parameters, using the inertia-invariants of the Langlands dual group. This generalizes the stack of unramified Langlands parameters in case the group is unramified. We then use this stack to deduce the Eichler--Shimura congruence relations for Hodge type Shimura varieties, without restrictions on the ramification.
format Preprint
id arxiv_https___arxiv_org_abs_2409_09522
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle The stack of spherical Langlands parameters
Hove, Thibaud van den
Number Theory
Representation Theory
For a reductive group over a nonarchimedean local field, we define the stack of spherical Langlands parameters, using the inertia-invariants of the Langlands dual group. This generalizes the stack of unramified Langlands parameters in case the group is unramified. We then use this stack to deduce the Eichler--Shimura congruence relations for Hodge type Shimura varieties, without restrictions on the ramification.
title The stack of spherical Langlands parameters
topic Number Theory
Representation Theory
url https://arxiv.org/abs/2409.09522