Abelian supplements in almost simple groups

Let G be an almost simple group with socle $G_0$ . In this paper we prove that whenever $G/G_0$ is abelian, then there exists an abelian subgroup A of G such that $G=AG_0$ . We propose a few applications of this structural property of almost simple groups.

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Main Authors: Mauro Costantini, Andrea Lucchini, Daniele Nemmi
Format: Article
Language:English
Published: Cambridge University Press 2025-01-01
Series:Forum of Mathematics, Sigma
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Online Access:https://www.cambridge.org/core/product/identifier/S2050509424001609/type/journal_article
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author Mauro Costantini
Andrea Lucchini
Daniele Nemmi
author_facet Mauro Costantini
Andrea Lucchini
Daniele Nemmi
author_sort Mauro Costantini
collection DOAJ
description Let G be an almost simple group with socle $G_0$ . In this paper we prove that whenever $G/G_0$ is abelian, then there exists an abelian subgroup A of G such that $G=AG_0$ . We propose a few applications of this structural property of almost simple groups.
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institution Kabale University
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publisher Cambridge University Press
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series Forum of Mathematics, Sigma
spelling doaj-art-ae52089fed3c4d0cba726a216f14c0f32025-01-24T05:20:19ZengCambridge University PressForum of Mathematics, Sigma2050-50942025-01-011310.1017/fms.2024.160Abelian supplements in almost simple groupsMauro Costantini0Andrea Lucchini1https://orcid.org/0000-0002-2134-4991Daniele Nemmi2Università di Padova, Dipartimento di Matematica “Tullio Levi-Civita”, Via Trieste 63, 35121 Padova, Italy; E-mail:Università di Padova, Dipartimento di Matematica “Tullio Levi-Civita”, Via Trieste 63, 35121 Padova, ItalyUniversità di Padova, Dipartimento di Matematica “Tullio Levi-Civita”, Via Trieste 63, 35121 Padova, Italy; E-mail:Let G be an almost simple group with socle $G_0$ . In this paper we prove that whenever $G/G_0$ is abelian, then there exists an abelian subgroup A of G such that $G=AG_0$ . We propose a few applications of this structural property of almost simple groups.https://www.cambridge.org/core/product/identifier/S2050509424001609/type/journal_article20D0620D45
spellingShingle Mauro Costantini
Andrea Lucchini
Daniele Nemmi
Abelian supplements in almost simple groups
Forum of Mathematics, Sigma
20D06
20D45
title Abelian supplements in almost simple groups
title_full Abelian supplements in almost simple groups
title_fullStr Abelian supplements in almost simple groups
title_full_unstemmed Abelian supplements in almost simple groups
title_short Abelian supplements in almost simple groups
title_sort abelian supplements in almost simple groups
topic 20D06
20D45
url https://www.cambridge.org/core/product/identifier/S2050509424001609/type/journal_article
work_keys_str_mv AT maurocostantini abeliansupplementsinalmostsimplegroups
AT andrealucchini abeliansupplementsinalmostsimplegroups
AT danielenemmi abeliansupplementsinalmostsimplegroups