What is... hierarchical hyperbolicity?
Group Theory
2026-01-23 v1 Geometric Topology
History and Overview
Abstract
This is a very short introduction to hierarchically hyperbolic spaces and groups. It is aimed at non-experts, including anyone who may encounter a group with some similarities to mapping class groups.
Keywords
Cite
@article{arxiv.2601.15410,
title = {What is... hierarchical hyperbolicity?},
author = {Alex Wright},
journal= {arXiv preprint arXiv:2601.15410},
year = {2026}
}
Comments
Comments are very welcome, both from experts and non-experts, on both mathematical content and exposition. This is intended for submission to the Notices of the American Math Society