Small cancellations over relatively hyperbolic groups and embedding theorems

D Osin - Annals of mathematics, 2010 - JSTOR
We generalize the small cancellation theory over ordinary hyperbolic groups to relatively
hyperbolic settings. This generalization is then used to prove various embedding theorems …

Poincaré inequalities, embeddings, and wild groups

A Naor, L Silberman - Compositio Mathematica, 2011 - cambridge.org
We present geometric conditions on a metric space (Y, dY) ensuring that, almost surely, any
isometric action on Y by Gromov's expander-based random group has a common fixed …

Boundaries of systolic groups

D Osajda, P Przytycki - Geometry & Topology, 2009 - msp.org
For all systolic groups we construct boundaries which are EZ–structures. This implies the
Novikov conjecture for torsion-free systolic groups. The boundary is constructed via a system …

Acylindrically hyperbolic groups with exotic properties

A Minasyan, D Osin - Journal of Algebra, 2019 - Elsevier
We prove that every countable family of countable acylindrically hyperbolic groups has a
common finitely generated acylindrically hyperbolic quotient. As an application, we obtain …

Group actions with commensurated subsets, wallings and cubings

Y Cornulier - arXiv preprint arXiv:1302.5982, 2013 - arxiv.org
arXiv:1302.5982v2 [math.GR] 13 Aug 2016 Page 1 arXiv:1302.5982v2 [math.GR] 13 Aug 2016
GROUP ACTIONS WITH COMMENSURATED SUBSETS, WALLINGS AND CUBINGS YVES …

A construction of hyperbolic Coxeter groups

D Osajda - Commentarii Mathematici Helvetici, 2013 - ems.press
A construction of hyperbolic Coxeter groups Page 1 Comment. Math. Helv. 88 (2013), 353–367
DOI 10.4171/CMH/288 Commentarii Mathematici Helvetici © Swiss Mathematical Society A …

Absolute profinite rigidity, direct products, and finite presentability

MR Bridson, AW Reid, R Spitler - arXiv preprint arXiv:2312.06058, 2023 - arxiv.org
We prove that there exist finitely presented, residually finite groups that are profinitely rigid in
the class of all finitely presented groups but not in the class of all finitely generated groups …

Actions of automorphism groups of free groups on homology spheres and acyclic manifolds

MR Bridson, K Vogtmann - Commentarii Mathematici Helvetici, 2010 - ems.press
For n≥ 3, let SAut (Fn) denote the unique subgroup of index two in the automorphism group
of a free group. The standard linear action of SL (n, ℤ) on ℝn induces non-trivial actions of …

Quasi‐isometric diversity of marked groups

A Minasyan, D Osin, S Witzel - Journal of Topology, 2021 - Wiley Online Library
We use basic tools of descriptive set theory to prove that a closed set S of marked groups
has 2 ℵ 0 quasi‐isometry classes, provided that every non‐empty open subset of S contains …

The large-scale geometry of right-angled Coxeter groups

P Dani - arXiv preprint arXiv:1807.08787, 2018 - arxiv.org
arXiv:1807.08787v1 [math.GR] 23 Jul 2018 Page 1 arXiv:1807.08787v1 [math.GR] 23 Jul 2018
THE LARGE-SCALE GEOMETRY OF RIGHT-ANGLED COXETER GROUPS PALLAVI DANI …