نتایج جستجو برای: berwald

تعداد نتایج: 137  

Journal: :Physical review 2021

In this work we study Randers spacetimes of Berwald type and analyze Pfeifer Wohlfarth's vacuum field equation Finsler gravity for class. We show that in case the is equivalent to vanishing Ricci tensor, analogously Einstein gravity. This implies considered Rutz's coincide scenario. also construct all exact solutions Berwald-Randers gravity, which turn out be composed a CCNV (covariantly consta...

Journal: :Frontiers of Mathematics in China 2020

Journal: :Ukrains’kyi Matematychnyi Zhurnal 2020

Journal: :Časopis pro pěstování matematiky 1967

2010
TADASHI AIKOU

In the present paper, we shall prove new characterizations of Berwald spaces and Landsberg spaces. The main idea inthis research is the use of the so-called average Riemannian metric.

In this paper‎, ‎the‎ ‎authors prove that a strictly Kähler-Berwald manifold with‎ ‎nonzero constant holomorphic sectional curvature must be a‎ Kähler manifold‎. 

Journal: :Differential Geometry and its Applications 2018

Journal: :International Journal of Mathematics 2023

In this paper, we establish a closer relation between the Berwald scalar curvature and [Formula: see text]-curvature. fact, prove that Finsler metric has isotropic if only it weakly For metrics of flag text]-curvature, they have almost text]-curvature is isotropic.

2008
Nabil L. Youssef S. H. Abed A. Soleiman

Adopting the pullback approach to Finsler geometry, the aim of the present paper is to provide new intrinsic (coordinate-free) proofs of intrinsic versions of the existence and uniqueness theorems for the Cartan and Berwald connections on a Finsler manifold. To accomplish this, the notions of semispray and nonlinear connection associated with a given regular connection, in the pullback bundle, ...

Journal: :Journal of Mathematical Analysis and Applications 1995

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