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A group $G$ is said to have dense normalizers if each non-empty open interval in its subgroup lattice $L(G)$ contains the normalizer of a certain subgroup of $G$. In this note, we find all finite groups satisfying this property. We also…

Group Theory · Mathematics 2025-04-01 Marius Tărnăuceanu

This work gives a classification of imprimitive irreducible finite subgroups of the orthogonal group O(7) plus the number of conjugate classes for each group.

Group Theory · Mathematics 2016-08-29 David B. Wales

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

Group Theory · Mathematics 2015-02-18 Marius Tarnauceanu

We prove that the outer automorphism group of a free group of countably infinite rank is complete.

Group Theory · Mathematics 2025-05-20 Vladimir A. Tolstykh

In this paper, we discuss about finite groups in which, CGH = NGH, for every abelian subgroup H of non prime power order. Also, we classify all such nilpotent and minimal non nilpotent groups.

Group Theory · Mathematics 2022-11-29 Ritesh Dwivedi

We classify all finite simple subgroups in the Cremona group of rank 3

Algebraic Geometry · Mathematics 2012-11-20 Yuri Prokhorov

Recent results on finite open group transformations are reviewed.

High Energy Physics - Theory · Physics 2007-05-23 Robert Marnelius

Let $F$ be either a free nilpotent group of a given class and of finite rank or a free solvable group of a certain derived length and of finite rank. We show precisely which ones have the $R_{\infty}$ property. Finally, we also show that…

Group Theory · Mathematics 2014-05-13 Karel Dekimpe , Daciberg Lima Gonçalves

This is an introduction to the class of groups that are locally embeddable into finite groups.

Group Theory · Mathematics 2020-04-17 Melvyn B. Nathanson

We classify all finite groups of essential dimension 2 over an algebraically closed field of characteristic 0.

Algebraic Geometry · Mathematics 2013-08-21 Alexander Duncan

This is the third and last of three papers containing the complete proof that all finitely presented groups are QSF.

Geometric Topology · Mathematics 2014-09-26 Valentin Poenaru

We present a characterization of the finite groups in which all real classes have prime powers size.

Group Theory · Mathematics 2022-12-06 Lorenzo Bonazzi

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

The free profinite product of finitely many absolute Galois group is an absolute Galois group.

Number Theory · Mathematics 2007-05-23 Dan Haran , Moshe Jarden , Jochen Koenigsmann

The principle result of this article is the determination of the possible finite subgroups of arithmetic lattices in U(2,1).

Group Theory · Mathematics 2009-01-26 D. B. McReynolds

We establish a general criterion for the finite presentability of subdirect products of groups and use this to characterize finitely presented residually free groups. We prove that, for all $n\in\mathbb{N}$, a residually free group is of…

Group Theory · Mathematics 2008-09-23 Martin R. Bridson , James Howie , Charles F. Miller , Hamish Short

Any virtually free group $H$ containing no non-trivial finite normal subgroup (e.g., the infinite dihedral group) is a retract of any finitely generated group containing $H$ as a verbally closed subgroup.

Group Theory · Mathematics 2018-06-26 Anton A. Klyachko , Andrey M. Mazhuga , Veronika Yu. Miroshnichenko

In this paper, we describe all finite Wajsberg algebras of order n<=9.

Rings and Algebras · Mathematics 2019-05-15 Cristina Flaut , Sarka Hoskova Mayerova , Arsham Borumand Saeid , Radu Vasile

We prove the following results: (1) Every group is a maximal subgroup of some free idempotent generated semigroup. (2) Every finitely presented group is a maximal subgroup of some free idempotent generated semigroup arising from a finite…

Group Theory · Mathematics 2011-08-02 Robert Gray , Nik Ruskuc

In this paper we determine the torsion free rank of the group of endotrivial modules for any finite group of Lie type, in both defining and non-defining characteristic. On our way to proving this, we classify the maximal rank $2$ elementary…

Group Theory · Mathematics 2022-07-20 Jon F. Carlson , Jesper Grodal , Nadia Mazza , Daniel K. Nakano