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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 is the fifth one in a series of papers classifying the factorizations of almost simple groups with nonsolvable factors. In this paper we deal with orthogonal groups of plus type.

Group Theory · Mathematics 2022-09-12 Cai Heng Li , Lei Wang , Binzhou Xia

This is the fourth one in a series of papers classifying the factorizations of almost simple groups with nonsolvable factors. In this paper we deal with orthogonal groups of minus type.

Group Theory · Mathematics 2021-09-14 Cai Heng Li , Lei Wang , Binzhou Xia

This paper classifies the factorizations of almost simple groups with a factor having at least two nonsolvable composition factors. This together with a previous classification result of the authors reduces the factorization problem of…

Group Theory · Mathematics 2019-04-02 Cai Heng Li , Binzhou Xia

This is the third one in a series of papers classifying the factorizations of almost simple groups with nonsolvable factors. In this paper we deal with orthogonal groups in odd dimension.

Group Theory · Mathematics 2021-08-03 Cai Heng Li , Lei Wang , Binzhou Xia

We classify the factorizations of finite classical groups with nonsolvable factors, completing the classification of factorizations of finite almost simple groups.

Group Theory · Mathematics 2024-07-26 Cai Heng Li , Lei Wang , Binzhou Xia

Let $G$ be a finite almost simple group with socle $G_0$. A (nontrivial) factorization of $G$ is an expression of the form $G=HK$, where the factors $H$ and $K$ are core-free subgroups. There is an extensive literature on factorizations of…

Group Theory · Mathematics 2020-11-17 Timothy C. Burness , Cai Heng Li

A classification is given for factorizations of almost simple groups with at least one factor solvable, and it is then applied to characterize $s$-arc-transitive Cayley graphs of solvable groups, leading to a striking corollary: Except the…

Group Theory · Mathematics 2016-02-29 Cai Heng Li , Binzhou Xia

We give an explicit characterization of solvable factors in factorizations of finite classical groups of Lie type. This completes the classification of solvable factors in factorizations of almost simple groups, finishing the program…

Group Theory · Mathematics 2025-08-19 Tao Feng , Cai Heng Li , Conghui Li , Lei Wang , Binzhou Xia , Hanlin Zou

We investigate near-factorizations of nonabelian groups, concentrating on dihedral groups. We show that some known constructions of near-factorizations in dihedral groups yield equivalent near-factorizations. In fact, there are very few…

Group Theory · Mathematics 2025-01-29 Donald L. Kreher , Maura B. Paterson , Douglas R. Stinson

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

Group Theory · Mathematics 2020-06-16 Nurlan Gasimli

We establish correspondances between factorisations of finite abelian groups (direct factors, unitary factors, non isomorphic subgroup classes) and factorisations of integer matrices. We then study counting functions associated to these…

Number Theory · Mathematics 2007-05-23 Johan Andersson , Gautami Bhowmik

This paper presents a classification of exact factorizations of almost simple groups, which has been a long-standing open problem initiated around 1980 by the work of Wiegold-Williamson, and significantly progressed by Liebeck, Praeger and…

Group Theory · Mathematics 2024-12-30 Cai Heng Li , Lei Wang , Binzhou Xia

We introduce the factorization graph of a finite group and study its connectedness and forbidden structures. We characterize all finite groups with connected factorization graphs and classify those with connected bipartite factorization…

Group Theory · Mathematics 2019-12-02 Mohammad Farrokhi Derakhshandeh Ghouchan , Ali Azimi

We say that a finite almost simple $G$ with socle $S$ is admissible (with respect to the spectrum) if $G$ and $S$ have the same sets of orders of elements. Let $L$ be a finite simple linear or unitary group of dimension at least three over…

Group Theory · Mathematics 2021-09-14 Grechkoseeva Mariya

We announce an atlas of subgroup lattices of almost simple groups and present two algorithms that were used to produce the atlas.

Group Theory · Mathematics 2013-12-02 Thomas Connor , Dimitri Leemans

In this paper we describe all the finite almost simple groups whose Gruenberg--Kegel graphs coincide with Gruenberg--Kegel graphs of finite solvable groups.

Group Theory · Mathematics 2016-06-14 Ilya B. Gorshkov , Natalia V. Maslova

We consider factorizations of a finite group $G$ into conjugate subgroups, $G=A^{x_{1}}\cdots A^{x_{k}}$ for $A\leq G$ and $x_{1},\ldots ,x_{k}\in G$, where $A$ is nilpotent or solvable. First we exploit the split $BN$-pair structure of…

Group Theory · Mathematics 2015-03-09 Martino Garonzi , Dan Levy , Attila Maróti , Iulian I. Simion

In the paper we complete the classification of Carter subgroups in finite almost simple groups. In particular, we prove that Carter subgroups of every finite almost simple group are conjugate. Togeather with previous results by author and…

Group Theory · Mathematics 2010-08-17 Vdovin Evgenii

We classify quasi-simple finite groups of essential dimension 3.

Algebraic Geometry · Mathematics 2017-04-18 Yuri Prokhorov
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