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Certain many-particle Hardy inequalities are derived in a simple and systematic way using the so-called ground state representation for the Laplacian on a subdomain of $\mathbb{R}^n$. This includes geometric extensions of the standard Hardy…

数学物理 · 物理学 2015-04-14 Douglas Lundholm

This is an introduction to geometric algebra, an alternative to traditional vector algebra that expands on it in two ways: 1. In addition to scalars and vectors, it defines new objects representing subspaces of any dimension. 2. It defines…

数学物理 · 物理学 2012-05-29 Eric Chisolm

Horizontal endomorphisms, almost complex structures, vertical, horizontal and complete lifts on prolongation of a Lie algebroid are considered. Then using exact sequences, semisprays are constructed. Moreover, important geometrical objects…

微分几何 · 数学 2013-10-29 Esmaeil Peyghan

A Fuchsian polyhedron in hyperbolic space is a polyhedral surface invariant under the action of a Fuchsian group of isometries (i.e. a group of isometries leaving globally invariant a totally geodesic surface, on which it acts cocompactly).…

微分几何 · 数学 2007-05-23 François Fillastre

The objective of this article is to build up a general theory of geometrical optics for spinning light rays in an inhomogeneous and anisotropic medium modeled on a Finsler manifold. The prerequisites of local Finsler geometry are reviewed…

数学物理 · 物理学 2008-11-26 Christian Duval

In this paper, we consider a Finsler space with a Randers change of Quartic metric F = $\sqrt[4]{\alpha^4 + \beta^4} + \beta$. The conditions for this space to be with reversible geodesics are obtained. Further, we study some geometrical…

微分几何 · 数学 2018-12-27 Gauree Shanker , Ruchi Kaushik Sharma

For a family $\mathcal{C}$ of properly embedded curves in the 2-dimensional disk $\mathbb{D}^{2}$ satisfying certain uniqueness properties, we consider convex polygons $P\subset \mathbb{D}^{2}$ and define a metric $d$ on $P$ such that…

度量几何 · 数学 2023-11-13 Charalampos Charitos , Ioannis Papadoperakis , Georgios Tsapogas

This paper is the first in a series of paper where we describe the differential operators on general nonlinear metric measure spaces, namely, the Finsler spaces. We try to propose a general method for gradient estimates of the positive…

微分几何 · 数学 2024-08-02 Bin Shen

The space of K\"ahler metrics can, on the one hand, be approximated by subspaces of algebraic metrics, while, on the other hand, can be enlarged to finite-energy spaces arising in pluripotential theory. The latter spaces are realized as…

微分几何 · 数学 2023-09-19 Tamás Darvas , Chinh H. Lu , Yanir A. Rubinstein

A Finsler metric is geodesically reversible if geodesics remain geodesics after a change of orientation. Asymmetric norms on vector spaces and Funk metrics in the interior of convex bodies are examples of geodesically reversible metrics…

微分几何 · 数学 2021-10-01 Juan-Carlos Alvarez Paiva

We work on a 4-manifold equipped with Lorentzian metric $g$ and consider a volume-preserving diffeomorphism which is the unknown quantity of our mathematical model. The diffeomorphism defines a second Lorentzian metric $h$, the pullback of…

数学物理 · 物理学 2021-01-05 Matteo Capoferri , Dmitri Vassiliev

Kinematics in Finsler space is investigated. It is showed that the result based on the kinematics with a special Finsler structure is in good agreement with the reported value of secular trend in the astronomical unit, $d{\rm…

广义相对论与量子宇宙学 · 物理学 2015-05-14 X. Li , Z. Chang

This paper introduces a novel theoretical framework for identifying Lagrangian Coherent Structures (LCS) in manifolds with non-constant curvature, extending the theory to Finsler manifolds. By leveraging Riemannian and Finsler geometry, we…

Physical foundations for relativistic spacetimes are revisited, in order to check at what extent Finsler spacetimes lie in their framework. Arguments based on inertial observers (as in the foundations of Special Relativity and Classical…

广义相对论与量子宇宙学 · 物理学 2020-04-21 Antonio Bernal , Miguel Ángel Javaloyes , Miguel Sánchez

We review recent developments in cosmological models based on Finsler geometry and extensions of general relativity within this framework. Finsler geometry generalizes Riemannian geometry by allowing the metric tensor to depend on position…

广义相对论与量子宇宙学 · 物理学 2025-06-24 Amine Bouali , Himanshu Chaudhary , Lehel Csillag , Rattanasak Hama , Tiberiu Harko , Sorin V. Sabau , Shahab Shahidi

We consider a triality between the Zermelo navigation problem, the geodesic flow on a Finslerian geometry of Randers type, and spacetimes in one dimension higher admitting a timelike conformal Killing vector field. From the latter…

广义相对论与量子宇宙学 · 物理学 2009-05-05 G. W. Gibbons , C. A. R. Herdeiro , C. M. Warnick , M. C. Werner

When the Maxwell equations are geometrized, the Maxwell Lagrangian is usually reduced to the Yang-Mills Lagrangian. In this case, the effective quadratic metric, usually corresponding to the Riemannian metric of our space, is considered.…

In a recent paper, it was claimed that any homogeneous Finsler space of odd dimension admits a homogeneous geodesic through any point. For the proof, the algebraic method dealing with the reductive decomposition of the Lie algebra of the…

微分几何 · 数学 2019-03-11 Zdeněk Dušek

In this paper I shall show how notions of Finsler geometry can be used to construct a new type of geometry using a scalar field, f, on the cotangent bundle of a differentiable manifold, M. This new geometry will be called Lorentzian…

广义相对论与量子宇宙学 · 物理学 2020-09-08 Gregory W. Horndeski

We obtain a result about the existence of only a finite number of geodesics between two fixed non-conjugate points in a Finsler manifold endowed with a convex function. We apply it to Randers and Zermelo metrics. As a by-product, we also…

微分几何 · 数学 2010-09-14 Erasmo Caponio , Miguel Angel Javaloyes , Antonio Masiello