Results 1 to 10 of about 581 (37)

Stability for hyperbolic groups acting on boundary spheres

open access: yesForum of Mathematics, Sigma, 2023
A hyperbolic group G acts by homeomorphisms on its Gromov boundary. We show that if $\partial G$ is a topological n–sphere, the action is topologically stable in the dynamical sense: any nearby action is semi-conjugate to the standard boundary ...
Kathryn Mann, Jason Fox Manning
doaj   +1 more source

Cusps, Kleinian groups, and Eisenstein series

open access: yesForum of Mathematics, Sigma, 2023
We study the Eisenstein series associated to the full rank cusps in a complete hyperbolic manifold. We show that given a Kleinian group $\Gamma
Beibei Liu, Shi Wang
doaj   +1 more source

Deforming cubulations of hyperbolic groups

open access: yesJournal of Topology, Volume 14, Issue 3, Page 877-912, September 2021., 2021
Abstract We describe a procedure to deform cubulations of hyperbolic groups by ‘bending hyperplanes’. Our construction is inspired by related constructions like Thurston's Mickey Mouse example, walls in fibred hyperbolic 3‐manifolds and free‐by‐Z groups, and Hsu–Wise turns.
Elia Fioravanti, Mark Hagen
wiley   +1 more source

Density of Metric Small Cancellation in Finitely Presented Groups [PDF]

open access: yesGroups, Complexity, Cryptology, 2020
Small cancellation groups form an interesting class with many desirable properties. It is a well-known fact that small cancellation groups are generic; however, all previously known results of their genericity are asymptotic and provide no information ...
Alex Bishop, Michal Ferov
doaj   +1 more source

Curve graphs for Artin–Tits groups of type B, A∼ and C∼ are hyperbolic

open access: yesTransactions of the London Mathematical Society, 2021
The graph of irreducible parabolic subgroups is a combinatorial object associated to an Artin–Tits group A defined so as to coincide with the curve graph of the (n+1)‐times punctured disk when A is Artin's braid group on (n+1) strands.
Matthieu Calvez   +1 more
doaj   +1 more source

CANNON–THURSTON MAPS DO NOT ALWAYS EXIST

open access: yesForum of Mathematics, Sigma, 2013
We construct a hyperbolic group with a hyperbolic subgroup for which inclusion does not induce a continuous map of the boundaries.
O. BAKER, T. R. RILEY
doaj   +1 more source

Finite index subgroups without unique product in graphical small cancellation groups [PDF]

open access: yes, 2014
We construct torsion-free hyperbolic groups without unique product whose subgroups up to some given finite index are themselves non-unique product groups.
Gruber, Dominik   +2 more
core   +3 more sources

AN ALTERNATE PROOF OF WISE’S MALNORMAL SPECIAL QUOTIENT THEOREM

open access: yesForum of Mathematics, Pi, 2016
We give an alternate proof of Wise’s malnormal special quotient theorem (MSQT), avoiding cubical small cancelation theory. We also show how to deduce Wise’s Quasiconvex Hierarchy Theorem from the MSQT and theorems of Hsu and Wise and Haglund and Wise.
IAN AGOL   +2 more
doaj   +1 more source

Topological geodesics and virtual rigidity [PDF]

open access: yes, 2001
We introduce the notion of a topological geodesic in a 3-manifold. Under suitable hypotheses on the fundamental group, for instance word-hyperbolicity, topological geodesics are shown to have the useful properties of, and play the same role in several ...
Bredon   +7 more
core   +1 more source

CANNON–THURSTON MAPS FOR KLEINIAN GROUPS

open access: yesForum of Mathematics, Pi, 2017
We show that Cannon–Thurston maps exist for degenerate free groups without parabolics, that is, for handlebody groups. Combining these techniques with earlier work proving the existence of Cannon–Thurston maps for surface groups, we show that Cannon ...
MAHAN MJ
doaj   +1 more source

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