نتایج جستجو برای: randers metric

تعداد نتایج: 81669  

2008
G. W. Gibbons C. A. R. Herdeiro C. M. Warnick

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 viewpoint, the data of the Zermelo problem are encoded in a (conformally) Painlevé-Gullstrand form of the spacetime metric, whereas the data of the Randers problem ar...

Journal: :iranian journal of science and technology (sciences) 2014
e. peyghan

dually flat finsler metrics form a special and valuable class of finsler metrics in finsler information geometry,which play a very important role in studying flat finsler information structure. in this paper, we prove that everylocally dually flat generalized randers metric with isotropic s-curvature is locally minkowskian.

Journal: :Facta Universitatis, Series: Mathematics and Informatics 2018

Journal: :Journal of Geometry and Physics 2021

Using the relativistic Fermat’s principle, we establish a bridge between stationary–complete manifolds which satisfy observer-manifold condition and pre-Randers metrics, namely, Randers metrics without any restriction on one-form. As consequence, give description of causal ladder such spacetimes in terms elements associated with metric: its geodesics distance. We obtain, as applications this in...

Journal: :iranian journal of science and technology (sciences) 2005
b. najafi

in this paper the general relatively isotropic l -curvature finsler metrics are studied. it isshown that on constant relatively landsberg spaces, the concepts of weakly landsbergian, landsbergianand generalized landsbergian metrics are equivalent. some necessary conditions for a relativelyisotropic l -curvature finsler metric to be a riemannian metric are also found.

Journal: :Physical review research 2021

Finding the fastest path to a desired destination is vitally important task for microorganisms moving in fluid flow. We study this problem by building an analytical formalism overdamped microswimmers on curved manifolds and arbitrary flows. show that solution corresponds geodesics of Randers metric, which asymmetric Finsler metric reflects irreversible character problem. Using example spherical...

Journal: :International electronic journal of geometry 2021

In this paper, we study the curvature features of class homogeneous Randers metrics. For these metrics, first find a reduction criterion to be Berwald metric based on mild restriction their Ricci tensors. Then, prove that every with relatively isotropic (or weak) Landsberg must Riemannian. This provides an extension well-known Deng-Hu theorem proves same result for Berwald-Randers non-zero flag...

2009
Xinyue Cheng Zhongmin Shen

We study an important class of Finsler metrics — Randers metrics. We classify Randers metrics of scalar flag curvature whose S-curvatures are isotropic. This class of Randers metrics contains all projectively flat Randers metrics with isotropic S-curvature and Randers metrics of constant flag curvature.

Journal: :International electronic journal of geometry 2022

The theory of Finsler metric was introduced by Paul Finsler, in 1918. author defines this using the Minkowski norm instead inner product. Therefore, geometry is a more general and includes Riemannian metric. In present work, metric, we investigate position vector rectifying, normal osculating curves Finslerian 3-space $\mathbb{F}^{3}$. We obtain characterizations these Furthermore, show that re...

2009
Oana Constantinescu Mircea Crasmareanu

The well-known invariants of conics are computed for classes of Finsler and Lagrange spaces. For the Finsler case, some (α, β)-metrics namely Randers, Kropina and ”Riemann”-type metrics provides conics as indicatrices and a Randers-Funk metric on the unit disk is treated as example. The relations between algebraic and differential invariants of (α, β)-metrics are pointed out as a method to use ...

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