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In this paper we study flat deformations of real subschemes of $\mathbb{P}^n$, hyperbolic with respect to a fixed linear subspace, i.e. admitting a finite surjective and real fibered linear projection. We show that the subset of the…

代数几何 · 数学 2022-10-04 Mario Kummer , Eli Shamovich

Let N be a topologically finite, orientable 3-manifold with ideal triangulation. We show that if there is a solution to the hyperbolic gluing equations, then all edges in the triangulation are essential. This result is extended to a…

几何拓扑 · 数学 2011-07-07 Henry Segerman , Stephan Tillmann

The present paper describes a way to relate Martin boundaries on spaces of varying topology. This enables us to approach some detailed inductive analysis of the eigenfunctions of conformal Laplacians on minimal hypersurfaces near their…

微分几何 · 数学 2008-08-15 Joachim Lohkamp

We present a survey of some results and questions related to the notion of scalar curvature in the setting of symplectic supermanifolds.

微分几何 · 数学 2018-05-11 Rosalía Hernández-Amador , Juan Monterde , José A Vallejo

We investigate 3-dimensional complete minimal hypersurfaces in the hyperbolic space $\mathbb{H}^{4}$ with Gauss-Kronecker curvature identically zero. More precisely, we give a classification of complete minimal hypersurfaces with…

微分几何 · 数学 2024-04-17 T. Hasanis , A. Savas-Halilaj , T. Vlachos

We consider a system consisting of a geometric evolution equation for a hypersurface and a parabolic equation on this evolving hypersurface. More precisely, we discuss mean curvature flow scaled with a term that depends on a quantity…

偏微分方程分析 · 数学 2022-05-06 Helmut Abels , Felicitas Bürger , Harald Garcke

Cutting a hyperbolic surface X along a simple closed multi-geodesic results in a hyperbolic structure on the complementary subsurface. We study the distribution of the shapes of these subsurfaces in moduli space as boundary lengths go to…

几何拓扑 · 数学 2022-08-10 Francisco Arana-Herrera , Aaron Calderon

This note is about a type of quantitative density of closed geodesics on closed hyperbolic surfaces. The main results are upper bounds on the length of the shortest closed geodesic that $\varepsilon$-fills the surface.

几何拓扑 · 数学 2017-05-31 Ara Basmajian , Hugo Parlier , Juan Souto

The hyperbolic manifold is a smooth manifold of negative constant curvature. While the hyperbolic manifold is well-studied in the literature, it has gained interest in the machine learning and natural language processing communities lately…

机器学习 · 计算机科学 2019-03-19 Pratik Jawanpuria , Mayank Meghwanshi , Bamdev Mishra

We examine a simple hard disc fluid with no long range interactions on the two dimensional space of constant negative Gaussian curvature, the hyperbolic plane. This geometry provides a natural mechanism by which global crystalline order is…

统计力学 · 物理学 2007-12-03 Carl D. Modes , Randall D. Kamien

Herein we present open problems and survey examples and theorems concerning sequences of Riemannian manifolds with uniform lower bounds on scalar curvature and their limit spaces. Examples of Gromov and of Ilmanen which naturally ought to…

度量几何 · 数学 2017-12-01 Christina Sormani

We introduce a description of a minimal surface in a space with boundary, as the world-hypersurface that the entangling surface traces. It does so by evolving from the boundary to the interior of the bulk under an appropriate geometric…

高能物理 - 理论 · 物理学 2020-04-22 Dimitrios Katsinis , Ioannis Mitsoulas , Georgios Pastras

This is a tale describing the large scale geometry of Euclidean plane domains with their hyperbolic or quasihyperbolic distances. We prove that in any hyperbolic plane domain, hyperbolic and quasihyperbolic quasi-geodesics are the same…

度量几何 · 数学 2017-04-25 David A Herron , Stephen M Buckley

The aim of this manuscript is to obtain rigidity and non-existence results for parabolic spacelike submanifolds with causal mean curvature vector field in orthogonally splitted spacetimes, and in particular, in globally hyperbolic…

微分几何 · 数学 2024-02-08 Alma L. Albujer , Jónatan Herrera , Rafael M. Rubio

We show that many graphs naturally associated to a connected, compact, orientable surface are hierarchically hyperbolic spaces in the sense of Behrstock, Hagen and Sisto. They also automatically have the coarse median property defined by…

几何拓扑 · 数学 2022-05-04 Kate M. Vokes

We give a sufficient condition for a meromorphic correspondence to be a holomorphic correspondence in a neighbourhood of a smooth real hypersurface

复变函数 · 数学 2013-11-14 Rasul Shafikov , Kaushal Verma

We discuss several ways of packing a hyperbolic surface with circles (of either varying radii or all being congruent) or horocycles, and note down some observations related to their symmetries (or the absence thereof).

几何拓扑 · 数学 2022-02-21 Maria Dostert , Alexander Kolpakov

We investigate geometric properties of surfaces given by certain formulae. In particular, we calculate the singular curvature and the limiting normal curvature of such surfaces along the set of singular points consisting of singular points…

微分几何 · 数学 2020-03-25 Yoshiki Matsushita , Takuya Nakashima , Keisuke Teramoto

We study deformations of complex hyperbolic surfaces which furnish the simplest examples of: (i) negatively curved K\"ahler manifolds and (ii) negatively curved Riemannian manifolds not having {\it constant} curvature. Although such complex…

微分几何 · 数学 2016-09-06 Boris Apanasov

We consider curvature flows in hyperbolic space with a monotone, symmetric, homogeneous of degree 1 curvature function F. Furthermore we assume F to be either concave and inverse concave or convex. For compact initial hypersurfaces, which…

微分几何 · 数学 2012-08-10 Matthias Makowski