activity
20162026
most citedHyperbolic structures on groups

31 citations · 44 across the 15 of their papers we have counts for

collaborators

15 papers

math.GR2026

Characterizing property (NL) in {C}oxeter groups

Sahana Balasubramanya, Rachel Niebler, Roberta Shapiro

A group has Property (NL) -- which stands for ``no loxodromics" -- if no element of the group acts loxodromically on any hyperbolic space. In this brief note, we provide a complete…

math.GR2025

Acylindricity in Higher Rank, Part I : Fundamentals

Sahana Balasubramanya, Talia Fernos

We present a new notion of non-positively curved groups: the collection of discrete countable groups acting (AU-)acylindrically on finite products of -hyperbolic spaces with gen…

math.GR2025

Stable subgroups of graph products

Sahana H Balasubramanya, Marissa Chesser, Alice Kerr +2

We extend the characterization of stable subgroups of right-angled Artin groups of Koberda, Mangahas and Taylor to the case of graph products of infinite groups. Specifically, we s…

math.GR2024

The semi-simple theory of higher rank acylindricity

Sahana Balasubramanya, Talia Fernos

We present a new notion of non-positively curved groups: the collection of discrete countable groups acting (AU-)acylindrically on finite products of -hyperbolic spaces with gen…

math.GR2024

Hyperbolic actions of Thompson's group and generalizations

Sahana Balasubramanya, Francesco Fournier-Facio, Matthew C. B. Zaremsky

We study the poset of hyperbolic structures on Thompson's group and its generalizations for . The global structure of this poset is as simple as one would expec…

math.GR2024

Property in Coexeter groups

Sahana Balasubramanya, Georgia Burkhalter, Rachel Niebler +1

A group has Property if it does not admit a loxodromic element in any hyperbolic action. In other words, a group with this property is inaccessible for study from t…

math.GR2023

(Non-)Recognizing Spaces for Stable Subgroups

Sahana Balasubramanya, Marissa Chesser, Alice Kerr +2

In this note, we consider the notion of what we call recognizing spaces for stable subgroups of a given group. When a group is a mapping class group or right-angled Artin group…

math.GR2023

A survey on classifying hyperbolic actions of groups

Sahana H. Balasubramanya

This paper is a survey of results proved in recent years that pertain to classifying cobounded hyperbolic actions of any group . In other words, we discuss results that allow us…

math.GR2022

Property (NL) for group actions on hyperbolic spaces

Sahana Balasubramanya, Francesco Fournier-Facio, Anthony Genevois +1

We introduce Property (NL), which indicates that a group does not admit any (isometric) action on a hyperbolic space with loxodromic elements. In other words, such a group can…

math.GR2022

Valuations, completions, and hyperbolic actions of metabelian groups

Carolyn R. Abbott, Sahana Balasubramanya, Sam Payne +1

Actions on hyperbolic metric spaces are an important tool for studying groups, and so it is natural, but difficult, to attempt to classify all such actions of a fixed group. In thi…

math.GR2021

Higher rank confining subsets and hyperbolic actions of solvable groups

Carolyn R. Abbott, Sahana Balasubramanya, Alexander J. Rasmussen

Recent papers of the authors have completely described the hyperbolic actions of several families of classically studied solvable groups. A key tool for these investigations is the…

math.GR2019

Finite extensions of and accessible groups

Sahana Balasubramanya

We prove that the group property of being and accessible is preserved under finite extensions.

math.GR2018★ 2 cited

Hyperbolic Structures on Wreath Products

Sahana H Balasubramanya

The study of the poset of hyperbolic structures on a group was initiated in a paper by C.Abbott, S.Balasubramanya and D.Osin. However, this poset is still very far from being u…

math.GR2017★ 31 cited

Hyperbolic structures on groups

Carolyn Abbott, Sahana Balasubramanya, Denis Osin

For every group , we introduce the set of hyperbolic structures on , denoted , which consists of equivalence classes of (possibly infinite) generating sets of…

math.GR2016★ 11 cited

Acylindrical group actions on quasi-trees

Sahana Balasubramanya

A group G is acylindrically hyperbolic if it admits a non-elementary acylindrical action on a hyperbolic space. We prove that every acylindrically hyperbolic group G has a generati…