Random walks and contracting elements II: translation length and quasi-isometric embedding

I Choi - Groups, Geometry, and Dynamics, 2024 - ems.press
Abstract Continuing from Choi (2022), we study random walks on metric spaces with
contracting elements. We prove that random subgroups of the isometry group of a metric …

The Poisson boundary of lampshuffler groups

E Silva - Mathematische Zeitschrift, 2024 - Springer
We study random walks on the lampshuffler group FSym (H)⋊ H, where H is a finitely
generated group and FSym (H) is the group of finitary permutations of H. We show that for …

Normal generators for mapping class groups are abundant

J Lanier, D Margalit - Commentarii Mathematici Helvetici, 2022 - ems.press
We provide a simple criterion for an element of the mapping class group of a closed surface
to be a normal generator for the mapping class group. We apply this to show that every …

Asymptotic translation lengths and normal generation for pseudo-Anosov monodromies of fibered 3–manifolds

H Baik, E Kin, H Shin, C Wu - Algebraic & Geometric Topology, 2023 - msp.org
Let M be a hyperbolic fibered 3–manifold. We study properties of sequences (S α n, ψ α n) of
fibers and monodromies for primitive integral classes in the fibered cone of M. The main …

Counting problems in graph products and relatively hyperbolic groups

I Gekhtman, SJ Taylor, G Tiozzo - Israel Journal of Mathematics, 2020 - Springer
We study properties of generic elements of groups of isometries of hyperbolic spaces. Under
general combinatorial conditions, we prove that loxodromic elements are generic (ie, they …

Arboreal structures on groups and the associated boundaries

A Erschler, V Kaimanovich - arXiv preprint arXiv:1903.02095, 2019 - arxiv.org
For any countable group with infinite conjugacy classes we construct a family of forests on
the group. For each of them there is a random walk on the group with the property that its …

Arboreal structures on groups and the associated boundaries

A Erschler, VA Kaimanovich - Geometric and Functional Analysis, 2023 - Springer
For any countable group with infinite conjugacy classes we construct a family of forests on
the group. For each of them there is a random walk on the group with the property that its …

Reducible normal generators for mapping class groups are abundant

H Baik, DM Kim, C Wu - Journal of Topology and Analysis, 2023 - World Scientific
In this paper, we study the normal generation of the mapping class group. We first show that
a mapping class is a normal generator if its restriction on the invariant subsurface normally …

[PDF][PDF] Asymptotic properties and Poisson boundaries of wreath product-like groups

E Silva - 2024 - math.ens.psl.eu
Asymptotic properties and Poisson boundaries of wreath products Page 1 Préparée à l’École
Normale Supérieure de Paris Asymptotic properties and Poisson boundaries of wreath …

Some examples of separable convex‐cocompact subgroups

M Hagen, A Sisto - Bulletin of the London Mathematical Society, 2023 - Wiley Online Library
Reid asked whether all convex‐cocompact subgroups of mapping class groups are
separable. Using a construction of Manning–Mj–Sageev, we give examples of separable …