Finsler warped product metrics with special Riemannian curvature properties

Finsler warped product metrics with special Riemannian curvature properties
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具有特殊黎曼曲率性质的芬斯勒扭曲积度量

DOI:
10.1007/s11425-018-9422-4
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发表时间:
2019-08
期刊:
Sci. China Math.
影响因子:
--
通讯作者:
H Zhang
H Zhang
中科院分区:
其他
文献类型:
--
作者:
H Liu;X Mo;H Zhang

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Finsler几何的基本问题之一是研究常曲率(或标量曲率)的Finsler度量。本文改进了表征标量旗曲率的Finsler翘积度量的Chen-Shen-Zhao方程。特别是,我们发现方程的特点芬斯勒翘曲产品度量的恒定标志曲率。然后我们改进了陈申赵关于刻画爱因斯坦-芬斯勒曲积度量的结果。作为其应用,我们利用已知的常旗曲率的局部射影平坦球对称度量,显式地构造了许多新的常Ricci曲率的翘曲积道格拉斯度量.
One of the fundamental problems in Finsler geometry is to study Finsler metrics of constant (or scalar) curvature. In this paper, we refine and improve Chen-Shen-Zhao equations characterizing Finsler warped product metrics of scalar flag curvature. In particular, we find equations that characterize Finsler warped product metrics of constant flag curvature. Then we improve the Chen-Shen-Zhao result on characterizing Einstein Finsler warped product metrics. As its application we construct explicitly many new warped product Douglas metrics of constant Ricci curvature by using known locally projectively flat spherically symmetric metrics of constant flag curvature.
DOI: 10.1090/s0002-9947-1969-0251664-4
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影响因子: 1.3
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