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We show that a Lie group $G$ admitting a bi-invariant distance must be the product $G=H\times K$ of an abelian group $H$ and a compact group $K$ with discrete center. Moreover, the distance in $G$ must come from the infima of lengths of…

微分几何 · 数学 2025-12-02 Gabriel Larotonda , Iván Rey

We establish some important inequalities under a lower weighted Ricci curvature bound on Finsler manifolds. Firstly, we establish a relative volume comparison of Bishop-Gromov type. As one of the applications, we obtain an upper bound for…

微分几何 · 数学 2021-07-16 Xinyue Cheng , Zhongmin Shen

In this article we present the cosmological equivalence between the relativistic Finsler-Randers cosmology, with dark energy and modified gravity constructions, at the background level. Starting from a small deviation from the quadraticity…

广义相对论与量子宇宙学 · 物理学 2013-12-17 Spyros Basilakos , Alexandros P. Kouretsis , Emmanuel N. Saridakis , Panayiotis Stavrinos

We discuss the recent proposal of implementing Doubly Special Relativity in configuration space by means of Finsler geometry. Although this formalism leads to a consistent description of the dynamics of a particle, it does not seem to give…

广义相对论与量子宇宙学 · 物理学 2008-11-26 S. Mignemi

The aim of the present paper is to provide a global presentation of the theory of special Finsler manifolds. We introduce and investigate globally (or intrinsically, free from local coordinates) many of the most important and most commonly…

微分几何 · 数学 2009-04-20 Nabil L. Youssef , S. H. Abed , A. Soleiman

We study the geometric and physical foundations of Finsler gravity theories with metric compatible connections defined on tangent bundles, or (pseudo) Riemannian manifolds). There are analyzed alternatives to Einstein gravity (including…

数学物理 · 物理学 2013-03-15 Sergiu I. Vacaru

The physics of classical particles in a Lorentz-breaking spacetime has numerous features resembling the properties of Finsler geometry. In particular, the Lagrange function plays a role similar to that of a Finsler structure function. A…

高能物理 - 唯象学 · 物理学 2017-08-23 Neil Russell

We consider additive Schwarz methods for boundary value problems involving the $p$-Laplacian. While existing theoretical estimates suggest a sublinear convergence rate for these methods, empirical evidence from numerical experiments…

数值分析 · 数学 2025-11-11 Young-Ju Lee , Jongho Park

An important operation in geometry processing is finding the correspondences between pairs of shapes. The Gromov-Hausdorff distance, a measure of dissimilarity between metric spaces, has been found to be highly useful for nonrigid shape…

计算机视觉与模式识别 · 计算机科学 2013-11-25 Alon Shtern , Ron Kimmel

We develop a unified framework for nonlinear subdivision schemes on complete metric spaces (CMS). We begin with CMS preliminaries and formalize refinement in CMS, retaining key structural properties, such as locality. We prove a convergence…

数值分析 · 数学 2025-09-11 Nira Dyn , Nir Sharon

In the present paper, we introduce and investigate various types of harmonic Finsler manifolds and find out the interrelation between them. We give some characterizations of such spaces in terms of the mean curvature of geodesic spheres and…

微分几何 · 数学 2024-07-02 Hemangi Shah , Ebtsam H. Taha

First we present a short overview of the long history of projectively flat Finsler spaces. We give a simple and quite elementary proof of the already known condition for the projective flatness, and we give a criterion for the projective…

微分几何 · 数学 2015-05-27 T. Q. Binh , D. Cs. Kertész , L. Tamássy

In this paper, we systematically study the $m$-dimensional sectional category of a fibration, introduced by Schwarz, as an approximating invariant for the sectional category. We develop the basic theory of this invariant, establish its…

Along with the construction of non-Lorentz-invariant effective field theories, recent studies which are based on geometric models of Finsler space-time become more and more popular. In this respect, the Finslerian approach to the problem of…

广义相对论与量子宇宙学 · 物理学 2015-06-03 V. Balan , G. Yu. Bogoslovsky , S. S. Kokarev , D. G. Pavlov , S. V. Siparov , N. Voicu

In this paper, we revisit the notion of length measures associated to planar closed curves. These are a special case of area measures of hypersurfaces which were introduced early on in the field of convex geometry. The length measure of a…

微分几何 · 数学 2020-10-28 Nicolas Charon , Thomas Pierron

We describe a framework to build distances by measuring the tightness of inequalities, and introduce the notion of proper statistical divergences and improper pseudo-divergences. We then consider the H\"older ordinary and reverse…

机器学习 · 计算机科学 2017-04-05 Frank Nielsen , Ke Sun , Stéphane Marchand-Maillet

The Ricci version of the Schur theorem is shown to hold for a wide class of Finsler metrics. What is more, let $F$ be any (positive definite) Finsler metric such that $\text{Ric} =\rho F^2$ with $\rho\colon M^n\rightarrow\mathbb{R}$ (i.e.,…

微分几何 · 数学 2023-04-19 Fidel F. Villaseñor

We provide a functional characterization of isometries between non-reversible Finsler manifolds, in the form of a generalization of the Myers-Nakai Theorem for Riemannian manifolds. We show that, since non-reversible Finsler manifolds are a…

泛函分析 · 数学 2025-01-07 Francisco Venegas M

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

This paper does not contain any new results, it is just an attempt to present, in a systematic way, one construction which establishes an interesting relationship between some ideas and notions well-known in the theory of integrable systems…

微分几何 · 数学 2016-02-10 Alexey Bolsinov