General multiple Dirichlet series from perverse sheaves

Fuente: arXiv
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Auteur principal: Sawin, Will
Format: Preprint
Publié: 2022
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author Sawin, Will
author_facet Sawin, Will
contents We give an axiomatic characterization of multiple Dirichlet series over the function field $\mathbb F_q(T)$, generalizing a set of axioms given by Diaconu and Pasol. The key axiom, relating the coefficients at prime powers to sums of the coefficients, formalizes an observation of Chinta. The existence of multiple Dirichlet series satisfying these axioms is proved by exhibiting the coefficients as trace functions of explicit perverse sheaves and using properties of perverse sheaves. The multiple Dirichlet series defined this way include, as special cases, many that have appeared previously in the literature.
format Preprint
id arxiv_https___arxiv_org_abs_2209_13072
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle General multiple Dirichlet series from perverse sheaves
Sawin, Will
Number Theory
Algebraic Geometry
We give an axiomatic characterization of multiple Dirichlet series over the function field $\mathbb F_q(T)$, generalizing a set of axioms given by Diaconu and Pasol. The key axiom, relating the coefficients at prime powers to sums of the coefficients, formalizes an observation of Chinta. The existence of multiple Dirichlet series satisfying these axioms is proved by exhibiting the coefficients as trace functions of explicit perverse sheaves and using properties of perverse sheaves. The multiple Dirichlet series defined this way include, as special cases, many that have appeared previously in the literature.
title General multiple Dirichlet series from perverse sheaves
topic Number Theory
Algebraic Geometry
url https://arxiv.org/abs/2209.13072