34 citations · 324 across the 55 of their papers we have counts for
10 papers · 1 filter
Commensurated hyperbolic subgroups
Nir Lazarovich, Alex Margolis, Mahan Mj
We show that if H is a non-elementary hyperbolic commensurated subgroup of infinite index in a hyperbolic group G, then H is virtually a free product of hyperbolic surface groups a…
Greenberg-Shalom's Commensurator Hypothesis and Applications
Nic Brody, David Fisher, Mahan Mj +1
We discuss many surprising implications of a positive answer to a question raised in some cases by Greenberg in the s and more generally by Shalom in the early s. We ref…
Class number for pseudo-Anosovs
François Dahmani, Mahan Mj
Given two automorphisms of a group , one is interested in knowing whether they are conjugate in the automorphism group of , or in the abstract commensurator of , and how t…
Commensurators of normal subgroups of lattices
David Fisher, Mahan Mj, Wouter Van Limbeek
We study a question of Greenberg-Shalom concerning arithmeticity of discrete subgroups of semisimple Lie groups with dense commensurators. We answer this question positively for no…
Regluing graphs of Free Groups
Pritam Ghosh, Mahan Mj
Answering a question due to Min, we prove that a finite graph of roses admits a regluing such that the resulting graph of roses has hyperbolic fundamental group.
Property (T) for fiber products
Mahan Mj, Arghya Mondal
We study when the fiber product of groups with Property (T) has Property (T).
Commutators, commensurators, and
Thomas Koberda, Mahan Mj
Let be a finite index normal subgroup which is contained in a principal congruence subgroup, and let denote a term of the lower central…
Controlled Floyd Separation and Non Relatively Hyperbolic Groups
Shubhabrata Das, Mahan Mj
We introduce the notion of controlled Floyd separation between geodesic rays starting at the identity in a finitely generated group G. Two such geodesic rays are said to be Floyd s…
Splittings and C-complexes
Mahan Mj, Peter Scott, Gadde Swarup
The intersection pattern of the translates of the limit set of a quasi-convex subgroup of a hyperbolic group can be coded in a natural incidence graph, which suggests connections w…
Relative Hyperbolicity, Trees of Spaces and Cannon-Thurston Maps
Mahan Mj, Abhijit Pal
We prove the existence of continuous boundary extensions (Cannon-Thurston maps) for the inclusion of a vertex space into a tree of (strongly) relatively hyperbolic spaces satisfyin…