scholarly journals PROJECTIVELY RELATED EINSTEIN RANDERS SPACE.

2016 ◽  
Vol 4 (12) ◽  
pp. 777-785
Author(s):  
Narasimhamurthy S.K ◽  
◽  
Roopa M.K. ◽  
Keyword(s):  
2013 ◽  
Vol 65 (1) ◽  
pp. 66-81 ◽  
Author(s):  
Shaoqiang Deng ◽  
Zhiguang Hu

AbstractIn this paper we give an explicit formula for the flag curvature of homogeneous Randers spaces of Douglas type and apply this formula to obtain some interesting results. We first deduce an explicit formula for the flag curvature of an arbitrary left invariant Randersmetric on a two-step nilpotent Lie group. Then we obtain a classification of negatively curved homogeneous Randers spaces of Douglas type. This results, in particular, in many examples of homogeneous non-Riemannian Finsler spaces with negative flag curvature. Finally, we prove a rigidity result that a homogeneous Randers space of Berwald type whose flag curvature is everywhere nonzero must be Riemannian.


2004 ◽  
Vol 48 (1/2) ◽  
pp. 3-15 ◽  
Author(s):  
David Bao
Keyword(s):  

2020 ◽  
Vol 36 (9) ◽  
pp. 1049-1060
Author(s):  
Qun He ◽  
Pei Long Dong ◽  
Song Ting Yin

2003 ◽  
Vol 55 (1) ◽  
pp. 112-132 ◽  
Author(s):  
Zhongmin Shen

AbstractIn the paper, we study the shortest time problem on a Riemannian space with an external force. We show that such problem can be converted to a shortest path problem on a Randers space. By choosing an appropriate external force on the Euclidean space, we obtain a non-trivial Randers metric of zero flag curvature. We also show that any positively complete Randers metric with zero flag curvature must be locally Minkowskian.


2004 ◽  
Vol 329 (2) ◽  
pp. 291-305 ◽  
Author(s):  
Marcelo Souza ◽  
Joel Spruck ◽  
Keti Tenenblat

2010 ◽  
Vol 21 (08) ◽  
pp. 1071-1094 ◽  
Author(s):  
IOANA MONICA MASCA ◽  
VASILE SORIN SABAU ◽  
HIDEO SHIMADA

A Finsler space is said to have reversible geodesics if for any of its oriented geodesic paths, the same path traversed in the opposite sense is also a geodesic. In [6] the conditions for a Randers space to have reversible geodesics have been found. The main goal of this paper is to find conditions for a Finsler space endowed with an (α, β)-metric to be with reversible geodesics or strictly reversible geodesics, respectively. Moreover, we obtain some new classes of (α, β)-metrics with reversible geodesics and show how new Finsler metrics with reversible geodesics can be constructed by means of a Randers change.


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