English
Related papers

Related papers: Deflating infinite Coxeter groups to finite groups

200 papers

In this note we describe the finite groups $G$ having $|G|-2$ cyclic subgroups. This partially solves the open problem in the end of \cite{3}.

Group Theory · Mathematics 2016-05-04 Marius Tărnăuceanu

We present a characterization of finite permutation groups which contain a transitive dihedral subgroup.

Combinatorics · Mathematics 2021-01-13 Shu Jiao Song

In this article we study the cohomology of deep level Deligne--Lusztig varieties of Coxeter type, attached to a reductive group over a local non-archimedean field, which splits over an unramified extension. This allows to construct some new…

Representation Theory · Mathematics 2024-12-10 Alexander B. Ivanov , Sian Nie , Panjun Tan

We define the notion of a climbing element in a finite real reflection group relative to a total order on the reflection set and we characterise these elements in the case where the total order arises from a bipartite Coxeter element.

Combinatorics · Mathematics 2010-05-06 Thomas Brady , Aisling Kenny , And Colum Watt

We provide involutory symmetric generating sets of finitely generated Coxeter groups, fulfilling a suitable finiteness condition, which in particular is fulfilled in the finite, affine and compact hyperbolic cases.

Group Theory · Mathematics 2009-01-20 Ben Fairbairn , Jürgen Müller

In this article we give an elementary introduction to the representation theory of finite magnetic groups from a purely mathematical point of view. -- En este art\'iculo damos una introducci\'on elemental a la teor\'ia de representaciones…

Representation Theory · Mathematics 2025-12-24 José Cantarero , Higinio Serrano Garcia

Provides a counterexample to a long standing conjecture of A. Adem regarding the behaviour of the integral cohomology of a p-group.

Algebraic Topology · Mathematics 2007-05-23 Jonathan Pakianathan

This paper is a continuation of our first paper [10] in which we showed how deformation theory of representation varieties can be used to study finite simple quotients of triangle groups. While in Part I, we mainly used deformations of the…

Group Theory · Mathematics 2013-01-15 Michael Larsen , Alexander Lubotzky , Claude Marion

In this short note we count the finite semirings up to isomorphism, and up to isomorphism and anti-isomorphism for some small values of $n$; for which we utilise the existing library of small semigroups in the GAP package Smallsemi.

Rings and Algebras · Mathematics 2025-12-02 J. Edwards , J. D. Mitchell , P. Ragavan

In this paper we explicitly compute finite bases of disjunctive identities and finite bases of regular representations for a number of interesting finite groups.

Group Theory · Mathematics 2009-09-25 Samuel Vovsi

In this note, we give a remark on the structure of centralizers of involutions in Coxeter groups.

Group Theory · Mathematics 2023-01-02 Koji Nuida

Let $G$ be a finite group. In a famous article, Quillen describes an $\mathrm{F}$-isomorphism between commutative $\mathbb{N}$-graded $\mathbb{F}_{2}$-algebras $$\mathrm{q}_{G}:\mathrm{H}^{*}(G;\mathbb{F}_{2})\to\mathrm{L}(G)\ ,$$ with…

Algebraic Topology · Mathematics 2025-01-08 Jean Lannes

This paper surveys basic properties of finite presentation in groups, Lie algebras and rings. It includes some new results and also new, more elementary proofs, of some results that are already in the literature. In particular, we discuss…

Rings and Algebras · Mathematics 2019-10-29 Donald S. Passman , Lance W. Small

We prove that the weak order on an infinite Coxeter group contains infinite antichains if and only if the group is not affine.

Combinatorics · Mathematics 2007-05-23 Axel Hultman

We introduce the notion of two-dimensional Coxeter system and show that parabolic subgroups of GL_n(F_2) can be described by an appropriate two-dimensional Coxeter system.

Group Theory · Mathematics 2010-03-11 Ivan Yudin

We enumerate factorizations of a Coxeter element in a well generated complex reflection group into arbitrary factors, keeping track of the fixed space dimension of each factor. In the infinite families of generalized permutations, our…

Combinatorics · Mathematics 2024-02-07 Joel Brewster Lewis , Alejandro H. Morales

In this article we study the homology of nilpotent groups. In particular a certain vanishing result for the homology and cohomology of nilpotent groups is proved.

K-Theory and Homology · Mathematics 2023-06-22 Behrooz Mirzaii , Fatemeh Yeganeh Mokari

In [APS], the authors characterize the partitions of $n$ whose corresponding representations of $S_n$ have nontrivial determinant. The present paper extends this work to all irreducible finite Coxeter groups $W$. Namely, given a nontrivial…

Representation Theory · Mathematics 2017-10-10 Debarun Ghosh , Steven Spallone

This paper deals with the number of subgroups of a given exponent in a finite abelian group. Explicit formulas are obtained in the case of rank two and rank three abelian groups. An asymptotic formula is also presented.

Group Theory · Mathematics 2017-05-01 Marius Tărnăuceanu , László Tóth

We show that one can naturally describe elements of R. Thompson's finitely presented infinite simple group $V$, known by Thompson to have a presentation with four generators and fourteen relations, as products of permutations analogous to…

Group Theory · Mathematics 2018-07-04 Collin Bleak , Martyn Quick