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arXiv 1202.4543math.DG
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$R^n$中球对称Finsler度量的曲率

The curvatures of spherically symmetric Finsler metrics in $R^n$

Xiaohuan Mo, Linfeng Zhou

摘要:

本文对$\mathbb{R}^n$中的球对称Berwald度量进行了分类.对于球对称的Landsberg度量,我们证明了在正则情形下不存在任何非Berwald度量。得到了分别刻画具有常旗曲率的球对称Finsler度量和这类Einstein度量的偏微分方程组.利用这些方程,我们找到了构造具有常旗曲率的非投射、非Randers-Finsler度量的有效方法,并给出了许多显式例子.

英文摘要:

In this paper, we classify the spherically symmetric Berwald metrics in $\mathbb{R}^n$. For the spherically symmetric Landsberg metrics, we prove that there do not exist any non-Berwald metrics among the regular case. The partial differential equation systems which can respectively characterize the spherically symmetric Finsler metrics with constant flag curvature and Einstein metrics of this type is also obtained. Utilizing these equations, we find an effective way to construct the non-projective, non-Randers Finsler metrics with constant flag curvature and many explicit examples are given by this method.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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