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Journal of Zhejiang University SCIENCE A
ISSN 1673-565X(Print), 1862-1775(Online), Monthly
2007 Vol.8 No.6 P.963-968
Projectively flat Asanov Finsler metric
Abstract: In this work, we study the Asanov Finsler metric F=α(β2/α2+gβ/α+1)1/2exp{(G/2)arctan[β/(hα)+G/2]}, where α=(αijyiyj)1/2 is a Riemannian metric and β=biyj is a 1-form, g∈(−2,2), h=(1−g2/4)1/2, G=g/h. We give the necessary and sufficient condition for Asanov metric to be locally projectively flat, i.e., α is projectively flat and β is parallel with respect to α. Moreover, we proved that the Douglas tensor of Asanov Finsler metric vanishes if and only if β is parallel with respect to α.
Key words: Exponential Finsler metric, Projectively flat, (α,β)-metrics, Douglas tensor
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DOI:
10.1631/jzus.2007.A0963
CLC number:
O186.1
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2024-08-27
Received:
2023-10-17
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2024-05-08
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