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A method to generalize results from Riemannian Geometry to Finsler geometry is presented. We use the method to generalize several results that involve only metric conditions. Between them we show that the topology induced by the Finsler…

微分几何 · 数学 2010-09-23 Ricardo Gallego Torrome

In this paper, we consider the cylindrically symmetric Finsler metrics and we obtain their Douglas curvature. Furthermore, we obtain the differential equation system of the cylindrically symmetric Finsler metrics with vanishing Douglas…

微分几何 · 数学 2024-11-05 Newton Solórzano , Dik Lujerio , Víctor León , Alexis Rodríguez

Let $F: \mathbb{R}^{n}\rightarrow [0,+\infty) $ be a convex function of class $C^{2}( \mathbb{R}^{n}\backslash\{0\})$ which is even and positively homogeneous of degree 1, and its polar $F^{0}$ represents a Finsler metric on…

偏微分方程分析 · 数学 2020-05-15 Rulong Xie

The paper contributes to the important and urgent problem to extend the physical theory of space-time in a Finsler-type way under the assumption that the isotropy of space is violated by a single geometrically distinguished spatial…

综合数学 · 数学 2015-12-09 G. S. Asanov

In this paper we present a unified simple approach to anisotropic Hardy inequalities in various settings. We consider Hardy inequalities which involve a Finsler distance from a point or from the boundary of a domain. The sharpness and the…

偏微分方程分析 · 数学 2018-06-22 A. Mercaldo , M. Sano , F. Takahashi

In the first part of this dissertation, we give a new definition of a Laplace operator for Finsler metric as an average, with regard to an angle measure, of the second directional derivatives. This operator is elliptic, symmetric with…

微分几何 · 数学 2012-04-05 Thomas Barthelmé

Finsler geometry naturally appears in the description of various physical systems. In this review I divide the emergence of Finsler geometry in physics into three categories: as dual description of dispersion relations, as most general…

广义相对论与量子宇宙学 · 物理学 2019-11-01 Christian Pfeifer

We continue the study of the analogue of Thurston's metric on the Teichm{\"u}ller space of Euclidean triangle which was started by Saglam and Papadopoulos in [1].By direct calculation, we give explicit expressions of the distance function…

几何拓扑 · 数学 2023-08-28 Hideki Miyachi , Ken'Ichi Ohshika , Athanase Papadopoulos

Royden proved that any isometry of Teichmuller space in the Teichmuller metric must be an element of the extended mapping class group M(S). He also proved that the Teichmuller metric is not symmetric at any point. In this paper we give…

几何拓扑 · 数学 2019-12-19 Benson Farb , Shmuel Weinberger

We undertake a systematic study of the infinitesimal geometry of the Thurston metric, showing that the topology, convex geometry and metric geometry of the tangent and cotangent spheres based at any marked hyperbolic surface representing a…

几何拓扑 · 数学 2024-01-10 Yi Huang , Ken'Ichi Ohshika , Athanase Papadopoulos

We develop a theory of Anosov representation of geometrically finite Fuchsian groups in SL(d,R) and show that cusped Hitchin representations are Borel Anosov in this sense. We establish analogues of many properties of traditional Anosov…

微分几何 · 数学 2022-04-20 Richard Canary , Tengren Zhang , Andrew Zimmer

In his paper Minimal stretch maps between hyperbolic surfaces, William Thurston defined a norm on the tangent space to Teichm{\"u}ller space of a hyperbolic surface, which he called the earthquake norm. This norm is obtained by assigning a…

复变函数 · 数学 2026-03-24 Hideki Miyachi , Ken'Ichi Ohshika , Athanase Papadopoulos

This paper is devoted to the study of the T-tensor associated with a spherically symmetric Finsler metric $F=u\phi(r,s)$ on \(\mathbb{R}^n\). We derive a general expression for the T-tensor in terms of the scalar function \(\phi(r, s)\) and…

微分几何 · 数学 2026-01-23 Salah G. Elgendi

We provide a Finslerian extension of the Schwarzschild metric based on heuristic arguments. The proposed metric asymptotically approaches not the Minkowski space-time but the Bogoslovsky locally anisotropic space-time which arises naturally…

广义相对论与量子宇宙学 · 物理学 2011-08-17 Z. K. Silagadze

The paper proposes extensions of the usual notions of Finslerian volume to time orientable Finsler spacetime manifolds. The basic idea is to replace, in the classical Busemann-Hausdorff and Holmes-Thompson definitions, integration on the…

微分几何 · 数学 2016-12-30 Nicoleta Voicu

A particular Finsler-metric proposed in [1,2] and describing a geometry with a preferred null direction is characterized here as belonging to a subclass contained in a larger class of Finsler-metrics with one or more preferred directions…

广义相对论与量子宇宙学 · 物理学 2015-06-25 H. F. Goenner , G. Yu. Bogoslovsky

We undertake to show how the relativistic Finslerian Metric Function (FMF) should arise under uni-directional violation of spatial isotropy, keeping the condition that the indicatrix (mass-shell) is a space of constant negative curvature.…

广义相对论与量子宇宙学 · 物理学 2007-05-23 G. S. Asanov

Dimensionality reduction is a fundamental task that aims to simplify complex data by reducing its feature dimensionality while preserving essential patterns, with core applications in data analysis and visualisation. To preserve the…

计算机视觉与模式识别 · 计算机科学 2025-04-01 Thomas Dagès , Simon Weber , Ya-Wei Eileen Lin , Ronen Talmon , Daniel Cremers , Michael Lindenbaum , Alfred M. Bruckstein , Ron Kimmel

We solve the problem of best approximation by partial isometries of given rank to an arbitrary rectangular matrix, when the distance is measured in any unitarily invariant norm. In the case where the norm is strictly convex, we parametrize…

泛函分析 · 数学 2016-11-08 Jorge Antezana , Eduardo Chiumiento

This is the first paper to systematically study the earthquake metric, an asymmetric Finsler metric on Teichm{\"u}ller space introduced by Thurston. We provide proofs for several assertions of Thurston and establish new properties of this…

几何拓扑 · 数学 2024-05-01 Yi Huang , Ken'ichi Ohshika , Huiping Pan , Athanase Papadopoulos