Weakly Symmetric Finsler Spaces

Author(s):  
Shaoqiang Deng
2010 ◽  
Vol 60 (4) ◽  
pp. 570-573 ◽  
Author(s):  
Parastoo Habibi ◽  
Asadollah Razavi

2010 ◽  
Vol 12 (02) ◽  
pp. 309-323 ◽  
Author(s):  
SHAOQIANG DENG ◽  
ZIXIN HOU

In this paper, we introduce the notion of weakly symmetric Finsler spaces and study some geometrical properties of such spaces. In particular, we prove that each maximal geodesic in a weakly symmetric Finsler space is the orbit of a one-parameter subgroup of the full isometric group. This implies that each weakly symmetric Finsler space has vanishing S-curvature. As an application of these results, we prove that there exist reversible non-Berwaldian Finsler metrics on the 3-dimensional sphere with vanishing S-curvature. This solves an open problem raised by Z. Shen.


2010 ◽  
Vol 62 (1) ◽  
pp. 52-73 ◽  
Author(s):  
Shaoqiang Deng

AbstractIn this paper, we introduce a new algebraic notion, weakly symmetric Lie algebras, to give an algebraic description of an interesting class of homogeneous Riemann-Finsler spaces, weakly symmetric Finsler spaces. Using this new definition, we are able to give a classification of weakly symmetric Finsler spaces with dimensions 2 and 3. Finally, we show that all the non-Riemannian reversible weakly symmetric Finsler spaces we find are non-Berwaldian and with vanishing S-curvature. Thismeans that reversible non-Berwaldian Finsler spaces with vanishing S-curvaturemay exist at large. Hence the generalized volume comparison theorems due to Z. Shen are valid for a rather large class of Finsler spaces.


2021 ◽  
Vol 77 ◽  
pp. 101763
Author(s):  
B. Lajmiri ◽  
B. Bidabad ◽  
M. Rafie-Rad ◽  
Y. Aryanejad-Keshavarzi
Keyword(s):  

1984 ◽  
Vol 17 (1) ◽  
Author(s):  
N.K. Sharma ◽  
Asha Srivastava
Keyword(s):  

2011 ◽  
Vol 52 (9) ◽  
pp. 093506 ◽  
Author(s):  
Ataabak B. Hushmandi ◽  
Morteza M. Rezaii

1998 ◽  
Vol 125 (4) ◽  
pp. 309-314 ◽  
Author(s):  
J. C. Gonz�lez-D�vila ◽  
L. Vanhecke

2002 ◽  
Vol 34 (3) ◽  
pp. 329-340 ◽  
Author(s):  
BRAD LACKEY

Using Chern's method of transgression, the Euler class of a compact orientable Riemann–Finsler space is represented by polynomials in the connection and curvature matrices of a torsion-free connection. When using the Chern connection (and hence the Christoffel–Levi–Civita connection in the Riemannian case), this result extends the Gauss–Bonnet formula of Bao and Chern to Finsler spaces whose indicatrices need not have constant volume.


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