Local-global principles for the existence of Levi factors

Fuente: arXiv
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Autori principali: Harbater, David, Hartmann, Julia, McNinch, George
Natura: Preprint
Pubblicazione: 2026
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author Harbater, David
Hartmann, Julia
McNinch, George
author_facet Harbater, David
Hartmann, Julia
McNinch, George
contents We discuss local-global principles for the existence of Levi factors (i.e., complements to the unipotent radical) for linear algebraic groups over one-variable function fields. We give examples of disconnected groups that fail the local-global principle, and prove a strong local-global principle in the presence of Levi descent.
format Preprint
id arxiv_https___arxiv_org_abs_2603_26501
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Local-global principles for the existence of Levi factors
Harbater, David
Hartmann, Julia
McNinch, George
Group Theory
Algebraic Geometry
20G07, 20G15, 14G12
We discuss local-global principles for the existence of Levi factors (i.e., complements to the unipotent radical) for linear algebraic groups over one-variable function fields. We give examples of disconnected groups that fail the local-global principle, and prove a strong local-global principle in the presence of Levi descent.
title Local-global principles for the existence of Levi factors
topic Group Theory
Algebraic Geometry
20G07, 20G15, 14G12
url https://arxiv.org/abs/2603.26501