Cuspidal cohomology classes for GL_n(Z)

Fuente: arXiv
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Auteurs principaux: Boxer, George, Calegari, Frank, Gee, Toby
Format: Preprint
Publié: 2023
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author Boxer, George
Calegari, Frank
Gee, Toby
author_facet Boxer, George
Calegari, Frank
Gee, Toby
contents We prove the existence of a cuspidal automorphic representation $π$ for $GL_{79}/\mathbf{Q}$ of level one and weight zero. We construct $π$ using symmetric power functoriality and a change of weight theorem, using Galois deformation theory. As a corollary, we construct the first known cuspidal cohomology classes in $H^*(GL_{n}(\mathbf{Z}),\mathbf{C})$ for any $n > 1$.
format Preprint
id arxiv_https___arxiv_org_abs_2309_15944
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Cuspidal cohomology classes for GL_n(Z)
Boxer, George
Calegari, Frank
Gee, Toby
Number Theory
Representation Theory
We prove the existence of a cuspidal automorphic representation $π$ for $GL_{79}/\mathbf{Q}$ of level one and weight zero. We construct $π$ using symmetric power functoriality and a change of weight theorem, using Galois deformation theory. As a corollary, we construct the first known cuspidal cohomology classes in $H^*(GL_{n}(\mathbf{Z}),\mathbf{C})$ for any $n > 1$.
title Cuspidal cohomology classes for GL_n(Z)
topic Number Theory
Representation Theory
url https://arxiv.org/abs/2309.15944