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This paper introduces a combinatorial structure of orthogeodesics on hyperbolic surfaces and presents several relations among them. As a primary application, we propose a recursive method for computing the trace (the hyperbolic cosine of…

Geometric Topology · Mathematics 2024-07-02 Nhat Minh Doan

We prove that if a proper metric space is quasi-isometric to a finitely generated group and to a space with a horoball over a finitely generated group, then that space is quasi-isometric to a rank-one symmetric space or the real line.

Group Theory · Mathematics 2026-04-16 Daniel Groves , Emily Stark , Genevieve S. Walsh , Kevin Whyte

In this paper we describe trigonometry on the de Sitter surface. For that a characterization of geodesics is given, leading to various types of triangles. We define lengths and angles of these. Then, transferring the concept of polar…

Differential Geometry · Mathematics 2008-10-30 Immanuel Asmus

In this paper we review some author's results about Weingarten surfaces in Euclidean space $\r^3$ and hyperbolic space $\h^3$. We stress here in the search of examples of linear Weingarten surfaces that satisfy a certain geometric property.…

Differential Geometry · Mathematics 2009-06-19 Rafael López

We determine which connected surfaces can be partitioned into topological circles. There are exactly seven such surfaces up to homeomorphism: those of finite type, of Euler characteristic zero, and with compact boundary components. As a…

General Topology · Mathematics 2011-01-04 Gábor Moussong , Nándor Simányi

On geometrically finite negatively curved surfaces, we give necessary and sufficient conditions for a one-sided horocycle $(h^s u)_{s\ge 0}$ to be dense in the nonwandering set of the geodesic flow. We prove that all dense one-sided orbits…

Dynamical Systems · Mathematics 2014-02-26 Barbara Schapira

We study the closure of horocycles on rank 1 nonpositively curved surfaces with finitely generated fundamental group. Each horocycle is closed or dense on a certain subset of the unit tangent bundle. In fact, we classify each half-horocycle…

Dynamical Systems · Mathematics 2024-07-10 Sergi Burniol Clotet

A semi-regular tiling of the hyperbolic plane is a tessellation by regular geodesic polygons with the property that each vertex has the same vertex-type, which is a cyclic tuple of integers that determine the number of sides of the polygons…

Combinatorics · Mathematics 2019-11-11 Basudeb Datta , Subhojoy Gupta

This article discusses inequalities on lengths of curves on hyperbolic surfaces. In particular, a characterization is given of which topological types of curves and multicurves always have a representative that satisfies a length inequality…

Geometric Topology · Mathematics 2021-09-10 Hugo Parlier

We investigate the problem of finding smooth hypersurfaces of constant mean curvature in hyperbolic space, which can be represented as radial graphs over a subdomain of the upper hemisphere. Our approach is variational and our main results…

Analysis of PDEs · Mathematics 2007-09-24 D. De Silva , J. Spruck

We provide a framework to classify hyperbolic monopoles with continuous symmetries and find a Structure Theorem, greatly simplifying the construction of all those with spherically symmetry. In doing so, we reduce the problem of finding…

Mathematical Physics · Physics 2024-07-03 C. J. Lang

We classify the boundaries of hyperbolic groups that have enough quasiconvex codimension-1 surface subgroups with trivial or cyclic intersections.

Group Theory · Mathematics 2022-02-04 Benjamin Beeker , Nir Lazarovich

In this paper we study topological surfaces as gridded surfaces in the 2-dimensional scaffolding of cubic honeycombs in Euclidean and hyperbolic spaces.

Geometric Topology · Mathematics 2017-12-01 Juan Pablo Díaz , Gabriela Hinojosa , Alberto Verjovsky

We present a variety of geometrical and combinatorial tools that are used in the study of geometric structures on surfaces: volume, contact, symplectic, complex and almost complex structures. We start with a series of local rigidity results…

Complex Variables · Mathematics 2024-02-28 Norbert A'Campo , Athanase Papadopoulos

We fully describe all horocycle orbit closures in $ \mathbb{Z} $-covers of compact hyperbolic surfaces. Our results rely on a careful analysis of the efficiency of all distance minimizing geodesic rays in the cover. As a corollary we obtain…

Dynamical Systems · Mathematics 2024-09-17 James Farre , Or Landesberg , Yair Minsky

The main goal of this note is to show that the study of closed hyperbolic surfaces with maximum length systole is in fact the study of surfaces with maximum length homological systole. The same result is shown to be true for once-punctured…

Geometric Topology · Mathematics 2015-03-17 Hugo Parlier

We comment briefly on some of the advantages and disadvantages of compact hyperbolic manifolds as candidate manifolds for large radii compactifications.

High Energy Physics - Phenomenology · Physics 2007-05-23 Rula Tabbash

We present a family of examples of two dimensional, hyperbolic complex manifolds whose envelopes of holomorphy are not hyperbolic.

Complex Variables · Mathematics 2007-05-23 Laura Geatti , Andrea Iannuzzi , Jean-Jacques Loeb

For a hyperbolic fibered 3-manifold M, we prove results that uniformly relate the structure of surface projections as one varies the fibrations of M. This extends our previous work from the fully-punctured to the general case.

Geometric Topology · Mathematics 2022-02-15 Yair N. Minsky , Samuel J. Taylor

We discuss asymptotically hyperbolic manifold with a noncompact boundary which is close to a horosphere in a certain sense. The model case is a horoball or the complement of a horoball in standard hyperbolic space. We show some geometric…

Differential Geometry · Mathematics 2021-02-18 Xiaoxiang Chai