activity
20202026
most citedRandom Artin groups

1 citations · 3 across the 12 of their papers we have counts for

collaborators

12 papers

math.GR2026

Acylindrical hyperbolicity of automorphism groups and property for generalized Higman groups

Ignat Soroko, Nicolas Vaskou

We consider the Higman groups () and their generalizations studied by Martin and Horbez--Huang. We prove that the automorphism groups of the Horbez--Huang groups on a…

math.GR2024

Dyer groups: Centres, hyperbolicity, and acylindrical hyperbolicity

Mireille Soergel, Nicolas Vaskou

In this article we describe the centres of all Dyer groups. We also give a complete classification of when a Dyer group is hyperbolic or acylindricality hyperbolic, with con…

math.GR2024

Homomorphisms between XL-type Artin groups

Martín Blufstein, Alexandre Martin, Nicolas Vaskou

We study homomorphisms between XL-type Artin groups and show that, in a suitable sense, a generic Artin group is both hopfian and co-hopfian. For XL-type Artin groups over complete…

math.GR2024

Property for new classes of Artin groups

Ignat Soroko, Nicolas Vaskou

We establish property for Artin groups of spherical type , , their central quotients, and also for large hyperbolic-type free-of-infinity Artin groups and so…

math.GR2024

Rigidity and classification results for large-type Artin groups

Jingyin Huang, Damian Osajda, Nicolas Vaskou

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…

math.GR2024

Fixed subgroups in Artin groups

Oli Jones, Nicolas Vaskou

We study fixed subgroups of automorphisms of any large-type Artin group . We define a natural subgroup of , and for every $γ\in \mathr…

math.GR2023

Characterising large-type Artin groups

Alexandre Martin, Nicolas Vaskou

We show that the class of large-type Artin groups is invariant under isomorphism, in stark contrast with the corresponding situation for Coxeter groups. We obtain this result by pr…

math.GR2023

Automorphisms of large-type free-of-infinity Artin groups

Nicolas Vaskou

We compute explicitly the automorphism and outer automorphism group of all large-type free-of-infinity Artin groups. Our strategy involves reconstructing the associated Deligne com…

math.GR2023★ 1 cited

Random Artin groups

Antoine Goldsborough, Nicolas Vaskou

We introduce a new model of random Artin groups. The two variables we consider are the rank of the Artin groups and the set of permitted coefficients of their defining graphs. The…

math.GR2022★ 1 cited

The isomorphism problem for large-type Artin groups

Nicolas Vaskou

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…

math.GR2021★ 1 cited

Parabolic subgroups of large-type Artin groups

María Cumplido, Alexandre Martin, Nicolas Vaskou

We show that the geometric realisation of the poset of proper parabolic subgroups of a large-type Artin group has a systolic geometry. We use this geometry to show that the set of…

math.GR2020

Acylindrical hyperbolicity for Artin groups of dimension 2

Nicolas Vaskou

In this paper, we show that every irreducible -dimensional Artin group of rank at least is acylindrically hyperbolic. We do this by studying the action of on its…