arXiv research

New right-angled Artin subgroups found in Artin groups.

An Artin HNN-extension is an HNN-extension of an Artin group in which the stable letter conjugates a pair of suitably chosen subsets of the standard generating set. We show that some finite index subgroup of an Artin HNN-extension embeds in an Artin group. We also obtain an analogous result for Coxeter groups.

The paper studies properties of Artin monoid Cayley graphs and their quasi-isometry to Deligne complexes.

Even Artin groups generalize right-angled Artin groups by allowing the labels in the defining graph to be even. In this paper a complete characterization of quasi-projective even Artin groups is given in terms of their defining graphs. Also, it is shown that quasi-projective even Artin groups are realizable by K(pi,1) …

The abstract explores Artin presentations and their connection to 4-manifolds using triangle groups.

In this article we construct a piecewise Euclidean, non-positively curved 2-complex for the 3-generator Artin groups of large type. As a consequence we show that these groups are biautomatic. A slight modification of the proof shows that many other Artin groups are also biautomatic. The general question (whether all Ar…

Many 2D Artin groups are residually finite.

The braid group $B_{n}$, endowed with Artin's presentation, admits two distinguished involutions. One is the anti-automorphism ${\rm{rev}}: B_{n} \to B_{n}$, $v \mapsto \bar{v}$, defined by reading braids in the reverse order (from right to left instead of left to right). Another one is the conjugation $τ:x \mapsto Δ^{…

This paper characterizes a specific type of twisted Artin groups embedded in knot groups.

In this paper we study the growth rates of Artin monoids and we show that 4 is a universal upper bound. We also show that the generating functions of the associated right-angled Artin monoids are given by families of Chebyshev polynomials. Applications to Artin groups and positive braids are given.

The study shows acylindrical hyperbolicity for Artin groups not associated with joins or cones.

Explicitly generates right-angled Artin subgroups from mapping classes.

Extended dual Coxeter and Artin groups theory to rank-three systems.

We prove that an Artin-Tits group of type $\tilde C$ is the group of fractions of a Garside monoid, analogous to the known dual monoids associated with Artin-Tits groups of spherical type and obtained by the "generated group" method. This answers, in this particular case, a general question on Artin-Tits groups, gives …

Right-angled Artin groups are classified based on measure equivalence.

The paper introduces a Deligne complex for Artin monoids and studies its properties.

The study examines differential smoothness in specific Artin-Schelter regular algebras of dimension 5.

According to the Tits conjecture proved by Crisp and Paris, [CP], the subgroups of the braid group generated by proper powers of the Artin elements are presented by the commutators of generators which are powers of commuting elements. Hence they are naturally presented as right-angled Artin groups. The case of subgroup…

Artin groups not free of infinity are shown to have finite centers.

Reduces conjecture to tree-based Artin groups.

New field invariant refines real spectrum and relates to absolute Galois group.

Artin groups get $K(π,1)$-conjecture proof for tree and cyclic diagrams.

The study proves conjecture for specific Artin groups.

Uniqueness of quasi-roots explored in right-angled Artin groups.

Study on faithfulness of Burau representation for Artin-Tits groups.

Introduces stability conditions and their connection to Artin groups.

For every integer l bigger than one, we find elements x and y in the mapping class group of an appropriate orientable surface S, satisfying the Artin relation of length l. That is, xyx... = yxy..., where each side of the equality contains l terms. By direct computations, we first find elements x and y in Mod(S) satisfy…

Classifies braids with positive Artin presentations and their fundamental groups.

Surveying connections between graph combinatorics and algebraic right-angled Artin groups.

We describe a simple locally CAT(0) classifying space for extra extra large type Artin groups (with all labels at least 5). Furthermore, when the Artin group is not dihedral, we describe a rank 1 periodic geodesic, thus proving that extra large type Artin groups are acylindrically hyperbolic. Together with Property RD …

Artin groups have finite stature based on vertex groups.

The \emph{action dimension} of a discrete group $G$ is the minimum dimension of a contractible manifold, which admits a proper $G$-action. In this paper, we study the action dimension of general Artin groups. The main result is that the action dimension of an Artin group with the nerve $L$ of dimension $n$ for $n \ne 2…

Compute Bredon homology for a specific type of Artin groups.

Artin groups of types $F_4$ and $H_4$ are not commensurable with $D_4$.

Uniform proof of property R_infinity for specific Artin-Tits groups.

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 algebraic structure, compactness, and regularity for group actions on one--dimensional…

Consider the mapping class group $\Mod_{g,p}$ of a surface $Σ_{g,p}$ of genus $g$ with $p$ punctures, and a finite collection $\{f_1,...,f_k\}$ of mapping classes, each of which is either a Dehn twist about a simple closed curve or a pseudo-Anosov homeomorphism supported on a connected subsurface. In this paper we prov…

Proof of $K(π, 1)$ conjecture for affine Artin groups.

Introduces a reduction system for Artin-Tits groups, improving algorithms and proving periodicity results.

Artin groups of type $D_n$ have special cycles and complexes with interesting properties.

The study examines subgroups of RACGs and RAAGs, focusing on their RAAG properties.

We prove the strong Atiyah conjecture for right-angled Artin groups and right-angled Coxeter groups. More generally, we prove it for groups which are certain finite extensions or elementary amenable extensions of such groups.

We construct a family of morphisms between Artin-Tits groups which generalise the ones constructed by J. Crisp in [Injective maps between Artin groups, Proceedings of the Special Year in Geometric Group Theory, Berlin, (1999), 119 -- 138]. We show that their restrictions to the positive Artin monoids respect normal for…

We study monoids generated by Zariski-van Kampen generators in the 17 fundamental groups of the complement of logarithmic free divisors in C^3 listed by Sekiguchi (Theorem 1). Five of them are Artin monoids and eight of them are free abelian monoids. The remaining four monoids are not Gaussian and, hence, are neither G…

We prove the Farrell-Jones fibered isomorphism conjecture for several classes of Artin groups of finite and affine types. As a consequence, we compute explicitly the surgery obstruction groups of the finite type pure Artin groups.

The goal of this paper is to construct examples of centralizers in the Artin braid groups requiring the number of generators quadratic in the number of strings. These examples disprove a recent conjecture of N. Franco and J. Gonzalez-Meneses.

Triangle Artin groups split as graphs of free groups under specific conditions.

Geometric model for a specific group in Artin groups.