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We show that a finite permutation group containing a regular abelian self-normalizing subgroup is soluble.

Group Theory · Mathematics 2013-05-29 Enrico Jabara , Pablo Spiga

We show that for non-conjugate subgroups $G_1$ and $G_2$ of a finite group $G$ there exists an extension of $G$ (by a finite group) in which the pre-images of $G_1$ and $G_2$ are not isomorphic. This allows us to show that $\mathbb Z$-coset…

Group Theory · Mathematics 2026-05-06 Ido Karshon , Alexander Lubotzky , D. B. McReynolds , Alan W. Reid , Mark Shusterman

Motivated in part by representation theoretic questions, we prove that if G is a finite quasi-simple group, then there exists an elementary abelian subgroup of G that intersects every conjugacy class of involutions of G.

Group Theory · Mathematics 2020-12-17 Robert M. Guralnick , Geoffrey R. Robinson

Various descending chains of subgroups of a finite permutation group can be used to define a sequence of `basic' permutation groups that are analogues of composition factors for abstract finite groups. Primitive groups have been the…

Group Theory · Mathematics 2007-05-23 Cheryl E. Praeger

In this paper, we classify the finite simple groups with an abelian Sylow subgroup.

Group Theory · Mathematics 2015-10-14 Rulin Shen , Yuanyang Zhou

We develop a structure theory of connected solvable spherical subgroups in semisimple algebraic groups. Based on this theory, we obtain an explicit classification of all such subgroups up to conjugation.

Group Theory · Mathematics 2012-01-24 Roman Avdeev

This is the first one in a series of papers classifying the factorizations of almost simple groups with nonsolvable factors. In this paper we deal with almost simple linear groups.

Group Theory · Mathematics 2021-10-13 Cai Heng Li , Lei Wang , Binzhou Xia

This article deals with the study of cactus groups from a combinatorial point of view. These groups have been gaining prominence lately in various domains of mathematics, amongst which are their relations with well-known groups such as…

Group Theory · Mathematics 2024-01-17 Hugo Chemin , Neha Nanda

The goal of this paper is to characterization generalized Alexander quandles of finite groups in the language of the underlying groups. Firstly, we prove that if finite groups $G$ are simple, then the quandle isomorphic classes of…

Group Theory · Mathematics 2022-11-01 Akihiro Higashitani , Hirotake Kurihara

Let $G$ be a finite group and $cd(G)$ denote the set of complex irreducible character degrees of $G$. In this paper, we prove that if $G$ is a finite group and $H$ is an almost simple group whose socle is Mathieu group such that $cd(G)…

Group Theory · Mathematics 2016-01-26 Seyed Hassan Alavi , Ashraf Daneshkhah , Ali Jafari

We classify, up to conjugacy, the finite subgroups of PGL(2,K) of order prime to char(K).

Algebraic Geometry · Mathematics 2009-09-23 Arnaud Beauville

In this paper we classify the finite groups satisfying the following property $P_4$: their orders of representatives are set-wise relatively prime for any 4 distinct non-central conjugacy classes.

Group Theory · Mathematics 2007-05-23 Xingzhong You , Guohua Qian , Wujie Shi

A proper subgroup $H$ in a finite group $G$ is said to be large if $|H|^3\geq |G|$. In this paper, we determined all large maximal subgroups of almost simple classical groups. Combined with the work of Alavi and Burness (J. Algebra 421…

Group Theory · Mathematics 2025-07-01 Fu-Gang Yin , Ting Lan , Weijun Liu , Oujie Chen

A group $G$ is called subgroup conjugacy separable if for every pair of non-conjugate finitely generated subgroups of $G$, there exists a finite quotient of $G$ where the images of these subgroups are not conjugate. We prove that limit…

Group Theory · Mathematics 2016-05-17 S. C. Chagas , P. A. Zalesskii

In this note we give a classification of the Maximal order Abelian subgroups of finite irreducible Coxeter groups. We also prove a Weyl group analogue of Cartan's theorem that all maximal tori in a connected compact Lie group are conjugate.

Group Theory · Mathematics 2022-03-30 John M. Burns , Goetz Pfeiffer

We prove that all Mathieu groups, some linear, and unitary groups are factorizable.

Group Theory · Mathematics 2020-06-16 Nurlan Gasimli

Let $G$ be a closed highly homogeneous subgroup of $S_{\infty}$ not involving circular orderings. We show that the closure of a conjugacy class from $G$ contains a conjugacy class which is comeagre in it. Furthermore, we show that the…

Logic · Mathematics 2025-04-23 Monika Drzewiecka , Aleksander Ivanov , Bartosz Mokry

Working over an arbitrary field, we define compact semisimple 2-categories, and show that every compact semisimple 2-category is equivalent to the 2-category of separable module 1-categories over a finite semisimple tensor 1-category. Then,…

Quantum Algebra · Mathematics 2023-10-27 Thibault D. Décoppet

In this note we study the finite groups whose subgroup lattices are dismantlable.

Group Theory · Mathematics 2015-02-18 Marius Tarnauceanu

Using generating functions, we enumerate regular semisimple conjugacy classes in the finite classical groups. For the general linear, unitary, and symplectic groups this gives a different approach to known results; for the special…

Group Theory · Mathematics 2012-09-18 Jason Fulman , Robert Guralnick