8 citations · 21 across the 9 of their papers we have counts for
11 papers
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…
(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…
Hyperbolic quotients of projection complexes
Matt Clay, Johanna Mangahas
This paper is a continuation of our previous work with Margalit where we studied group actions on projection complexes. In that paper, we demonstrated sufficient conditions so that…
Right-angled Artin groups as normal subgroups of mapping class groups
Matt Clay, Johanna Mangahas, Dan Margalit
We construct the first examples of normal subgroups of mapping class groups that are isomorphic to non-free right-angled Artin groups. Our construction also gives normal, non-free…
The geometry of purely loxodromic subgroups of right-angled Artin groups
Thomas Koberda, Johanna Mangahas, Samuel J. Taylor
We prove that finitely generated purely loxodromic subgroups of a right-angled Artin group fulfill equivalent conditions that parallel characterizations of convex cocompactn…
An algorithm to detect full irreducibility by bounding the volume of periodic free factors
Matt Clay, Johanna Mangahas, Alexandra Pettet
We provide an effective algorithm for determining whether an element of the outer automorphism group of a free group is fully irreducible. Our method produces a finite list which c…
An effective algebraic detection of the Nielsen--Thurston classification of mapping classes
Thomas Koberda, Johanna Mangahas
In this article, we propose two algorithms for determining the Nielsen-Thurston classification of a mapping class on a surface . We start with a finite generating set fo…
Convex cocompactness in mapping class groups via quasiconvexity in right-angled Artin groups
Johanna Mangahas, Samuel J. Taylor
We characterize convex cocompact subgroups of mapping class groups that arise as subgroups of specially embedded right-angled Artin groups. That is, if the right-angled Artin group…
A recipe for short-word pseudo-Anosovs
Johanna Mangahas
Given any generating set of any pseudo-Anosov-containing subgroup of the mapping class group of a surface, we construct a pseudo-Anosov with word length bounded by a constant depen…
The geometry of right angled Artin subgroups of mapping class groups
Matt Clay, Christopher J. Leininger, Johanna Mangahas
We describe sufficient conditions which guarantee that a finite set of mapping classes generate a right-angled Artin group quasi-isometrically embedded in the mapping class group.…
Uniform uniform exponential growth of subgroups of the mapping class group
Johanna Mangahas
Let Mod(S) denote the mapping class group of a compact, orientable surface S. We prove that finitely generated subgroups of Mod(S) which are not virtually abelian have uniform expo…