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In this paper, we study the warped structures of Finsler metrics. We obtain the differential equation that characterizes Finsler warped product metrics with vanishing Douglas curvature. By solving this equation, we obtain all Finsler warped product Douglas metrics. Some new Douglas Finsler metrics of this type are produced by using known spherically symmetric Douglas metrics.

In this note, we study a new Finslerian quantity Ĉ defined by the Riemannian curvature. We prove that the new Finslerian quantity is a non-Riemannian quantity for a Finsler manifold with dimension n = 3. Then we study Finsler metrics of scalar curvature. We find that the Ĉ-curvature is closely related to the flag curvature and the H-curvature. We show that Ĉ-curvature gives, a measure of the failure of a Finsler metric to be of weakly isotropic flag curvature. We also give a simple proof of the Najafi-Shen-Tayebi' theorem.

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Finsler Warped Product Metrics of Douglas Type

A NEW QUANTITY IN RIEMANN-FINSLER GEOMETRY *

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Finsler Warped Product Metrics of Douglas Type

A NEW QUANTITY IN RIEMANN-FINSLER GEOMETRY*

A NEW QUANTITY IN RIEMANN-FINSLER GEOMETRY *