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What is a vector field on a C*-algebra is defined. Its relation to semigroups of endomorphisms was researched. Some results given about those vector fields and semigroups. There are also various constructions of semigroups including one…

Mathematical Physics · Physics 2012-12-04 Innocenti Maresin

The geometry and analysis on Finsler manifolds is a very important part of Finsler geometry. In this article, we introduce some important and fundamental topics in global Finsler geometry and discuss the related properties and the…

Differential Geometry · Mathematics 2019-10-21 Xinyue Cheng

We first present the natural definitions of the horizontal differential, the divergence (as an adjoint operator), and a $p$-harmonic form on a Finsler manifold. Next, we prove a Hodge-type theorem for a Finsler manifold in the sense that a…

Differential Geometry · Mathematics 2023-04-04 M. Ahmad Mirshafeazadeh , B. Bidabad

Gradient vector fields are fundamental objects from both theoretical and practical perspectives, since various phenomena can be modeled within this framework. The ``moduli space'' of such vector fields provides the foundation for describing…

Dynamical Systems · Mathematics 2025-10-02 Tomoo Yokoyama

We explore a generalization of Matsumoto metric intrinsically. Given a Finsler manifold $(M,F)$ which admits a concurrent $\pi$-vector field $\overline{\varphi}$, we consider the change $\widehat{F}(x,y)=\frac {F^2 (x,y)}…

Differential Geometry · Mathematics 2025-10-28 A. Soleiman , Ebtsam H. Taha

The study of curvature properties of homogeneous Finsler spaces with $(\alpha, \beta)$-metrics is one of the central problems in Riemann-Finsler geometry. In the present paper, the existence of invariant vector fields on homogeneous Finsler…

Differential Geometry · Mathematics 2020-03-18 Gauree Shanker , Sarita Rani

In this paper we consider the normal map of a closed plane curve as a vector field on the cylinder. We interpret the critical points geometrically and study their Poincar\'{e} index, including the points at infinity. After projecting the…

Differential Geometry · Mathematics 2022-09-12 Thomas Waters , Matthew Cherrie

This paper is part of a series of papers on differential geometry of $C^\infty$-ringed spaces. In this paper, we study vector fields and their flows on a class of singular spaces. Our class includes arbitrary subspaces of manifolds, as well…

Differential Geometry · Mathematics 2023-11-17 Yael Karshon , Eugene Lerman

The work extends the A. Connes' noncommutative geometry to spaces with generic local anisotropy. We apply the E. Cartan's anholonomic frame approach to geometrical models and physical theories and develop the nonlinear connection formalism…

Mathematical Physics · Physics 2007-05-23 Sergiu Vacaru

On the affine space containing the space $\mathcal{S}$ of quantum states of finite-dimensional systems there are contravariant tensor fields by means of which it is possible to define Hamiltonian and gradient vector fields encoding relevant…

Mathematical Physics · Physics 2018-02-07 Florio M. Ciaglia , Alberto Ibort , Giuseppe Marmo

In this paper we study differential forms and vector fields on the orbit space of a proper action of a Lie group on a smooth manifold, defining them as multilinear maps on the generators of infinitesimal diffeomorphisms, respectively. This…

Differential Geometry · Mathematics 2021-08-03 Larry Bates , Richard Cushman , Jędrzej Śniatycki

The Filippov convention is widely used in the literature to define vector fields on a discontinuity set of piecewise-continuous vector fields. The aim of this paper is to give a sufficient and necessary condition for an interpolation scheme…

Dynamical Systems · Mathematics 2021-09-03 Tomoharu Suda

An extension of Riemmann's geometry into a direction dependent geometric structure is usually described by Finsler's geometry. Historically, this construction was motivated by the well-known Riemann's quartic length element example. Quite…

Mathematical Physics · Physics 2021-07-06 Yakov Itin

We give an overview on the status and on the perspectives of Finsler gravity, beginning with a discussion of various motivations for considering a Finslerian modification of General Relativity. The subjects covered include Finslerian…

General Relativity and Quantum Cosmology · Physics 2018-12-05 Claus Lämmerzahl , Volker Perlick

In this paper, we revise the concept of noncommutative vector fields introduced previously in Ref. [1,2], extending the framework, adding new results and clarifying the old ones. Using appropriate algebraic tools certain shortcomings in the…

Mathematical Physics · Physics 2024-12-18 Andrzej Borowiec

In this article, we review some aspects of gravitational field and cosmology based on Finsler and Finsler-like generalized metric structures. The geometrical framework of these spaces allows further investigation of locally-anisotropic…

General Relativity and Quantum Cosmology · Physics 2025-05-15 P. C. Stavrinos , A. Triantafyllopoulos

Our aim in this paper is to investigate some geometrical properties of Berger Spheres i.e. homogeneous Ricci solitons and harmonicity properties of invariant vector fields. We determine all vector fields which are critical points for the…

Differential Geometry · Mathematics 2021-10-11 Y. AryaNejad

Special coordinate systems are constructed in a neighborhood of a point or of a curve. Taylor expansions can then be easily inferred for the metric, the connection, or the Finsler Lagrangian in terms of curvature invariants. These…

General Relativity and Quantum Cosmology · Physics 2017-02-27 E. Minguzzi

In this note, we provide a important considerations of a familiar topic: the gradient of a vector field. The gradient of a vector field is a common quantity represented in continuum mechanics. However, even for Cartesian coordinate systems,…

Mathematical Physics · Physics 2022-08-17 Brian D. Wood , Peeter Joot , Stephen Whitaker

We investigate the existence of coordinate transformations which bring a given vector field on a manifold equipped with an involutive distribution into the form of a second-order differential equation field with parameters. We define…

Differential Geometry · Mathematics 2011-12-06 T. Mestdag , M. Crampin