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Related papers: Hausdorff dimension of non-conical limit sets

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In this paper, we develop techniques to study the Hausdorff dimensions of non-conical and Myrberg limit sets for groups acting on negatively curved spaces. We establish maximality of the Hausdorff dimension of the non-conical limit set of…

Group Theory · Mathematics 2025-06-06 Mahan Mj , Wenyuan Yang

This is the second part of the works on Hausdorff dimensions of Schottky groups. It has been conjectured that the Hausdorff dimensions of nonclassical Schottky groups are strictly bounded from below. In this second part of our works we…

Geometric Topology · Mathematics 2017-12-19 Yong Hou

In this paper we provide a criteria for geometric finiteness of Kleinian groups in general dimension. We formulate the concept of conformal finiteness for Kleinian groups in space of dimension higher than two, which generalizes the notion…

Differential Geometry · Mathematics 2007-05-23 Alice Chang , Jie Qing , Paul Yang

The classical Hausdorff dimension of finite or countable sets is zero. We define an analog for finite sets, called finite Hausdorff dimension which is non-trivial. It turns out that a finite bound for the finite Hausdorff dimension…

Discrete Mathematics · Computer Science 2015-08-13 Juan M. Alonso

In this paper we prove that there exists a positive number $\lambda>0$, such that any 2-generated Kleinian groups with limit set of Hausdorff dimension $<\lambda$ are classical Schottky groups.

Geometric Topology · Mathematics 2013-07-02 Yong Hou

We investigate subsets of a multifractal decomposition of the limit set of a conformal graph directed Markov system, which is constructed from the Cayley graph of a free group with at least two generators. The subsets we consider are…

Dynamical Systems · Mathematics 2015-11-12 Johannes Jaerisch

We prove that the relative homological dimension of a Kleinian group G does not exceed 1 + the critical exponent of G. As an application of this result we show that for a geometrically finite Kleinian group G, if the topological dimension…

Group Theory · Mathematics 2007-05-23 Michael Kapovich

We prove that Kleinian groups whose limit sets are Cantor sets of Hausdorff dimension $<1$ are free. On the other hand we construct for any $\epsilon>0$ examples of non-free purely hyperbolic Kleinian groups whose limit set is a Cantor set…

Geometric Topology · Mathematics 2015-06-02 Pekka Pankka , Juan Souto

We prove some geometric properties of sets in the first Heisenberg group whose Heisenberg Hausdorff dimension is the minimal or maximal possible in relation to their Euclidean one and the corresponding Hausdorff measures are positive and…

Classical Analysis and ODEs · Mathematics 2017-05-12 Pertti Mattila , Laura Venieri

We provide evidence both for and against a conjectural analogy between geometrically finite infinite covolume Fuchsian groups and the mapping class group of compact non-orientable surfaces. In the positive direction, we show the complement…

Geometric Topology · Mathematics 2023-11-09 Sayantan Khan

In 2004, Bishop proved that for Kleinian groups acting on hyperbolic space, the Hausdorff dimension of the limit set is completely determined by two extremal dynamical behaviors: recurrent geodesics and geodesics escaping linearly to…

Dynamical Systems · Mathematics 2026-05-26 Daniel Pizarro , Felipe Riquelme

We construct examples showing that the normalized Lebesgue measure of the conical limit set of a uniformly quasiconformal group acting discontinuously on the disc may take any value between zero and one. This is in contrast to the cases of…

Complex Variables · Mathematics 2016-09-06 Peter W. Jones , Lesley A. Ward

We generalize Bonahon's characterization of geometrically infinite torsion-free discrete subgroups of PSL(2, $\mathbb{C}$) to geometrically infinite discrete isometry subgroups in the case of rank 1 symmetric spaces, and, under the…

Group Theory · Mathematics 2019-01-29 Michael Kapovich , Beibei Liu

In this paper we provide the complete classification of convex cocompact Kleinian group of Hausdorff dimensions less than $1.$ In particular, we prove that every convex cocompact Kleinian group of Hausdorff dimension $<1$ is a classical…

Geometric Topology · Mathematics 2021-02-12 Yong Hou

We construct finitely generated simple torsion-free groups with strong homological control. Our main result is that every subset of $\mathbb{N} \cup \{\infty\}$, with some obvious exceptions, can be realized as the set of dimensions of…

Group Theory · Mathematics 2025-04-14 Francesco Fournier-Facio , Bin Sun

In this paper we study the relationship between three numerical invariants associated to a Kleinian group, namely the critical exponent, the Hausdorff dimension of the limit set and the convex core entropy. The Hausdorff dimension of the…

Complex Variables · Mathematics 2012-04-11 Kurt Falk , Katsuhiko Matsuzaki

We expand a result of Birman and Series (1985) by proving that the set of geodesics whose self-intersection angles are bounded from below has Hausdorff dimension zero. In addition, we show that the set of geodesics that do not bound a…

Geometric Topology · Mathematics 2025-09-19 Joaquín Lejtreger

In this paper we provide the complete classification of Kleinian groups of Hausdorff dimensions less than $1.$ In particular, we prove that every purely loxodromic Kleinian groups of Hausdorff dimension $<1$ is a classical Schottky group.…

Geometric Topology · Mathematics 2017-12-19 Yong Hou

By considering a Moran-type construction of fractals on $[0,1]$, we show that for any $0\le s\le 1$, there exists some Moran fractal set, which is perfect, with Hausdorff dimension $s$ whose Fourier dimension is zero and it contains…

Classical Analysis and ODEs · Mathematics 2017-07-21 Chun-Kit Lai

We consider the space of all quasifuchsian metrics on the product of a surface with the real line. We show that, in a neighborhood of the submanifold consisting of fuchsian metrics, every non-fuchsian metric is completely determined by the…

Differential Geometry · Mathematics 2018-08-02 Francis Bonahon
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