Boundaries of Dehn fillings

D Groves, JF Manning, A Sisto - Geometry & Topology, 2019 - msp.org
We begin an investigation into the behavior of Bowditch and Gromov boundaries under the
operation of Dehn filling. In particular, we show many Dehn fillings of a toral relatively …

Quasiconvexity and Dehn filling

D Groves, JF Manning - American Journal of Mathematics, 2021 - muse.jhu.edu
We define a new condition on relatively hyperbolic Dehn filling which allows us to control the
behavior of a relatively quasiconvex subgroups which need not be full. As an application, in …

[HTML][HTML] Cohomology of group theoretic Dehn fillings I: Cohen-Lyndon type theorems

B Sun - Journal of Algebra, 2020 - Elsevier
This is the first paper of three papers in a row aiming to study cohomology of group theoretic
Dehn fillings. In the present paper, we prove a particular free product structure, which is …

Quasiconvexity and Dehn filling

D Groves, JF Manning - arXiv preprint arXiv:1708.07968, 2017 - arxiv.org
We define a new condition on relatively hyperbolic Dehn filling which allows us to control the
behavior of a relatively quasiconvex subgroups which need not be full. As an application, in …

Drilling hyperbolic groups

D Groves, P Haïssinsky, JF Manning, D Osajda… - arXiv preprint arXiv …, 2024 - arxiv.org
Given a hyperbolic group $ G $ and a maximal infinite cyclic subgroup $\langle g\rangle $,
we define a drilling of $ G $ along $ g $, which is a relatively hyperbolic group pair …

Local cut points and splittings of relatively hyperbolic groups

M Haulmark - Algebraic & Geometric Topology, 2019 - msp.org
We show that the existence of a nonparabolic local cut point in the Bowditch boundary∂(G,
ℙ) of a relatively hyperbolic group (G, ℙ) implies that G splits over a 2–ended subgroup. This …

Boundary classification and two‐ended splittings of groups with isolated flats

M Haulmark - Journal of Topology, 2018 - Wiley Online Library
In this paper we provide a classification theorem for one‐dimensional boundaries of groups
with isolated flats. Given a group Γ acting geometrically on a CAT (0) space X with isolated …

Relatively geometric actions of K\" ahler groups on CAT (0) cube complexes

C Bregman, D Groves, K Zhu - arXiv preprint arXiv:2210.12850, 2022 - arxiv.org
We prove that for $ n\geq 2$, a non-uniform lattice in $\text {PU}(n, 1) $ does not admit a
relatively geometric action on a $\mathrm {CAT}(0) $ cube complex, in the sense of Einstein …

Relatively hyperbolic groups with planar boundaries

GC Hruska, GS Walsh - arXiv preprint arXiv:2405.20428, 2024 - arxiv.org
In this article, we prove a version of Martin and Skora's conjecture that convergence groups
on the $2 $-sphere are covered by Kleinian groups. Given a relatively hyperbolic group pair …

Aritmethic lattices of SO (1, n) and units of group rings

S Chagas, Á del Rio, PA Zalesskii - Journal of Pure and Applied Algebra, 2023 - Elsevier
We establish that standard arithmetic subgroups of a special orthogonal group SO (1, n) are
conjugacy separable. As an application we deduce this property for unit groups of certain …