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In this paper we solve the isomorphism problem for all large-type Artin groups. Our strategy involves reconstructing the Coxeter groups associated with large-type Artin groups in a purely algebraic way. This answers several questions raised…

Group Theory · Mathematics 2023-04-14 Nicolas Vaskou

Given a finite graph G there is a corresponding group given by the presentation with generators the vertices of G and a relation [x,y]=1 for generators x and y precisely when (x,y) is an edge of G. Such groups are known as partially…

Group Theory · Mathematics 2007-07-03 Andrew J Duncan , Ilya V Kazachkov , Vladimir N Remeslennikov

We characterize when (and how) a Right-Angled Artin group splits nontrivially over an abelian subgroup.

Group Theory · Mathematics 2015-02-03 Daniel Groves , Michael Hull

Let $\Gamma$ be a simplicial, finite, connected graph such that $\Gamma$ does not decompose as a nontrivial join. We prove that two notions of strong quasiconvexity and stability are equivalent in the right-angled Artin group $A_\Gamma$…

Group Theory · Mathematics 2017-09-05 Hung Cong Tran

For a one-ended right-angled Artin group, we give an explicit description of its JSJ tree of cylinders over infinite cyclic subgroups in terms of its defining graph. This is then used to classify certain right-angled Artin groups up to…

Group Theory · Mathematics 2022-07-22 Alexander Margolis

It has long been known that the combinatorial properties of a graph $\Gamma$ are closely related to the group theoretic properties of its right angled artin group (raag). It's natural to ask if the graph homomorphisms are similarly related…

Group Theory · Mathematics 2025-09-24 Chris Grossack

For all Artin groups, we characterise the girth (i.e. the length of a shortest cycle) of the defining graph algebraically, showing that it is an isomorphism invariant. Using this result, we prove that the Artin groups based on a cycle graph…

Group Theory · Mathematics 2026-01-09 Giovanni Sartori

We are motivated by the question that for which class of right-angled Artin groups (RAAG's), the quasi-isometry classification coincides with commensurability classification. This is previously known for RAAG's with finite outer…

Geometric Topology · Mathematics 2024-12-03 Jingyin Huang

We give a combinatorial criterion for determining which Bestvina--Brady group is isomorphic to a right-angled Artin group.

Group Theory · Mathematics 2022-03-07 Yu-Chan Chang

For a hierarchically hyperbolic group, we provide sufficient conditions under which suitable powers of a finite collection of elements generate a right-angled Artin subgroup. Under additional hypotheses, we further show that this subgroup…

Group Theory · Mathematics 2025-09-03 Sangrok Oh , Jihoon Park

We demonstrate that the submonoid membership problem and the rational subset membership problem are equivalent in Artin groups. Both these problem are undecidable in a given Artin group if and only if the group embeds the right-angled Artin…

Group Theory · Mathematics 2024-09-27 Islam Foniqi

We give necessary and sufficient conditions on the graph of a right-angled Artin group that determine whether the group is subgroup separable or not. Moreover, we investigate the profinite topology of the direct product of two free groups.…

Group Theory · Mathematics 2009-05-11 V. Metaftsis , E. Raptis

We survey the role of right-angled Artin groups in the theory of diffeomorphism groups of low dimensional manifolds. We first describe some of the subgroup structure of right-angled Artin groups. We then discuss the interplay between…

Group Theory · Mathematics 2017-07-20 Thomas Koberda

In this article, we explore the problem of determining isomorphisms between the twisted complex group algebras of finite $p$-groups. This problem bears similarity to the classical group algebra isomorphism problem and has been recently…

Rings and Algebras · Mathematics 2024-11-20 Gurleen Kaur , Surinder Kaur , Pooja Singla

We observe an inductive structure in a large class of Artin groups and exploit this information to deduce the Farrell-Jones isomorphism conjecture for several classes of Artin groups of finite real, complex and affine types.

Group Theory · Mathematics 2024-03-25 S. K. Roushon

We construct the first examples of normal subgroups of mapping class groups that are isomorphic to non-free right-angled Artin groups. Our construction also gives normal, non-free right-angled Artin subgroups of other groups, such as braid…

Geometric Topology · Mathematics 2023-06-22 Matt Clay , Johanna Mangahas , Dan Margalit

We compute the automorphism group of the intersection graph of many large-type Artin groups. This graph is an analogue of the curve graph of mapping class groups but in the context of Artin groups. As an application, we deduce a number of…

Group Theory · Mathematics 2024-07-30 Jingyin Huang , Damian Osajda , Nicolas Vaskou

This article is a survey on the braid groups, the Artin groups, and the Garside groups. It is a presentation, accessible to non-experts, of various topological and algebraic aspects of these groups. It is also a report on three points of…

Group Theory · Mathematics 2007-11-16 Luis Paris

We study the class N of graphs, the right-angled Artin groups defined on which do not contain surface subgroups. We prove that a presumably smaller class N' is closed under amalgamating along complete subgraphs, and also under adding…

Group Theory · Mathematics 2010-12-03 Sang-hyun Kim

We examine distortion of finitely generated normal subgroups. We show a connection between subgroup distortion and group divergence. We suggest a method computing the distortion of normal subgroups by decomposing the whole group into…

Group Theory · Mathematics 2020-09-16 Hung Cong Tran