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Geodesics, which play an important role in spray-Finsler geometry, are integral curves of a spray vector field on a manifold. Some comparison theorems and rigidity issues are established on the completeness of geodesics of a spray or a…

Differential Geometry · Mathematics 2023-01-03 Guojun Yang

In this paper, we give the general form of spherically symmetric Finsler metrics in $R^n$ and surprisedly find that many well-known Finsler metrics belong to this class. Then we explicitly express projective metrics of this type. The…

Differential Geometry · Mathematics 2010-06-22 Linfeng Zhou

For warped products with harmonic curvature, nonconstant warping functions $\phi$, and compact two-dimensional bases $(M,h)$, we establish a dichotomy: either the Gaussian curvature $K$ of the metric $g=\phi^{-2}h$ is constant and negative,…

Differential Geometry · Mathematics 2024-12-19 Andrzej Derdzinski , Paolo Piccione

This study presents many special anisotropic conformal changes of a conic pseudo-Finsler surface $(M,F)$, such as $C$-anisotropic and horizontal $C$-anisotropic conformal transformations, which reduce to $C$-conformal when the conformal…

Differential Geometry · Mathematics 2025-05-29 Nabil L. Youssef , Ebtsam H. Taha , A. A. Kotb , S. G. Elgendi

We show how geodesics, Jacobi vector fields and flag curvature of a Finsler metric behave under Zermelo deformation with respect to a Killing vector field. We also show that Zermelo deformation with respect to a Killing vector field of a…

Differential Geometry · Mathematics 2018-04-13 Patrick Foulon , Vladimir S. Matveev

Adopting the pullback approach to global Finsler geometry, the aim of the present paper is to provide intrinsic (coordinate-free) proofs of the existence and uniqueness theorems for the Chern (Rund) and Hashiguchi connections on a Finsler…

Differential Geometry · Mathematics 2013-04-30 Nabil L. Youssef , S. H. Abed , A. Soleiman

We consider the contact process on a countable-infinite and connected graph of bounded degree. For this process started from the upper invariant measure, we prove certain uniform mixing properties under the assumption that the infection…

Probability · Mathematics 2018-10-17 Stein Andreas Bethuelsen

We prove a generalized contraction principle with control function in complete partial metric spaces. The contractive type condition used allows the appearance of self distance terms. The obtained result generalizes some previously obtained…

General Topology · Mathematics 2016-09-20 Thabet Abdeljawad , Younis Zaidan , Naseer Shahzad

In a well-known paper by Bruna, Nagel and Wainger [BNW], Fourier transform decay estimates were proved for smooth hypersurfaces of finite line type bounding a convex domain. In this paper, we generalize their results in the following ways.…

Classical Analysis and ODEs · Mathematics 2024-10-01 Michael Greenblatt

Given a Finslerian metric $F$ on a $C^4$-manifold, conformal deformations of $F$ preserving the $R$-Einstein criterion are presented. In particular, locally conformal invariance between two Finslerian $R$-Einstein metrics is characterized.

General Mathematics · Mathematics 2019-02-04 Serge Degla , Gilbert Nibaruta , Léonard Todjihounde

Given a closed hyperbolic Riemannian surface, the aim of the present paper is to describe an explicit construction of smooth deformations of the hyperbolic metric into Finsler metrics that are not Riemannian and whose properties are such…

Differential Geometry · Mathematics 2009-09-07 Bruno Colbois , Florence Newberger , Patrick Verovic

The present paper is a continuation of a foregoing paper [Tensor, N. S., 69 (2008), 155-178]. The main aim is to establish \emph{an intrinsic investigation} of the conformal change of the most important special Finsler spaces, namely,…

Differential Geometry · Mathematics 2014-11-20 Nabil L. Youssef , S. H. Abed , A. Soleiman

Let Y be a locally convex Hausdorff space, K \subset E a cone and \leq_K the partial order defined by K. Let (X, p) be a TV S- cone metric space, {\phi} : K \rightarrow K a vectorial comparison function and f : X \rightarrow X such that…

Functional Analysis · Mathematics 2011-11-15 Ion Olaru

A piecewise flat Finsler metric on a triangulated surface $M$ is a metric whose restriction to any triangle is a flat triangle in some Minkowski space with straight edges. One of the main purposes of this work is to study the properties of…

Differential Geometry · Mathematics 2017-04-28 Ming Xu , Shaoqiang Deng

We consider the projective Finsler metrizability problem: under what conditions the solutions of a given system of second-order ordinary differential equations (SODE) coincide with the geodesics of a Finsler metric, as oriented curves.…

Differential Geometry · Mathematics 2017-05-23 Tamás Milkovszki , Zoltán Muzsnay

A relevant property of equifocal submanifolds is that their parallel sets are still immersed submanifolds, which makes them a natural generalization of the so-called isoparametric submanifolds. In this paper, we prove that the regular…

Differential Geometry · Mathematics 2021-02-03 Marcos M. Alexandrino , Benigno Alves , Miguel Angel Javaloyes

We consider metrics related to each other by functionals of a scalar field $\varphi(x)$ and it's gradient $\nabla \varphi(x)$, and give transformations of some key geometric quantities associated with such metrics. Our analysis provides…

General Relativity and Quantum Cosmology · Physics 2014-11-24 Dawood Kothawala

We introduce a class of generalized relative entropies (inspired by the Bregman divergence in information theory) on the Wasserstein space over a weighted Riemannian or Finsler manifold. We prove that the convexity of all the entropies in…

Differential Geometry · Mathematics 2013-04-09 Shin-ichi Ohta , Asuka Takatsu

For compact manifolds with infinite fundamental group we present sufficient topological or metric conditions ensuring the existence of two geometrically distinct closed geodesics. We also show how results about generic Riemannian metrics…

Differential Geometry · Mathematics 2022-08-30 Hans-Bert Rademacher , Iskander A. Taimanov

A Finsler space $(M,F)$ is called flag-wise positively curved, if for any $x\in M$ and any tangent plane $\mathbf{P}\subset T_xM$, we can find a nonzero vector $y\in \mathbf{P}$, such that the flag curvature $K^F(x,y, \mathbf{P})>0$. Though…

Differential Geometry · Mathematics 2016-06-09 Ming Xu
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