Short hierarchically hyperbolic groups II: quotients and the Hopf property for Artin groups

Autor:	Mangioni, Giorgio, Sisto, Alessandro
Rok vydání:	2024
Předmět:	Mathematics - Group Theory 20F67 (Primary) 57K20 20F36 (Secondary)
Druh dokumentu:	Working Paper
Popis:	We prove that most Artin groups of large and hyperbolic type are Hopfian, meaning that every self-epimorphism is an isomorphism. The class covered by our result is generic, in the sense of Goldsborough-Vaskou. Moreover, assuming the residual finiteness of certain hyperbolic groups with an explicit presentation, we get that all large and hyperbolic type Artin groups are residually finite. We also show that most quotients of the five-holed sphere mapping class group are hierarchically hyperbolic, up to taking powers of the normal generators of the kernels. The main tool we use to prove both results is a Dehn-filling-like procedure for short hierarchically hyperbolic groups (these also include e.g. non-geometric 3-manifolds, and triangle- and square-free RAAGs). Comment: 55 pages, 9 figures. All comments are gladly welcome!
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2412.04364 Zobrazit plný text záznamu View this record from Arxiv