Finsler metrics of weakly isotropic flag curvature
Finsler metrics of weakly isotropic flag curvature
复制标题
弱各向同性旗曲率的芬斯勒度量
DOI:
10.4310/cag.2020.v28.n1.a4
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发表时间:
2015-02
影响因子:
0.7
通讯作者:
Benling Li
中科院分区:
文献类型:
--
作者:
Benling Li
Finsler metrics of scalar flag curvature play an important role to show the complexity and richness of general Finsler metrics. In this paper, on an $n$-dimensional manifold $M$ we study the Finsler metric $F=F(x,y)$ of scalar flag curvature ${\bf K} = {\bf K}(x,y)$ and discover some equations ${\bf K}$ should be satisfied. As an application, we mainly study the metric $F$ of weakly isotropic flag curvature ${\bf K} = \frac{3 \theta}{F} + \sigma$, where $\theta=\theta_i(x) y^i \neq 0$ is a $1$-form and $\sigma =\sigma(x)$ is a scalar function. We prove that in this case, $F$ must be a Randers metric when $dim(M) \geq 3$. Further, without the restriction on the dimension we prove that projectively flat Finsler metrics of such weakly isotropic flag curvature are Randers metrics too.
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影响因子:
0.8
作者:
Hu, Zhiguang;Deng, Shaoqiang
通讯作者:
Deng, Shaoqiang
DOI:
10.1007/978-94-015-9727-2
发表时间:
2001-03
期刊:
--
影响因子:
--
作者:
Z. Shen
通讯作者:
Z. Shen
DOI:
10.1007/978-94-015-8194-3
发表时间:
1993
期刊:
--
影响因子:
--
作者:
P. Antonelli
通讯作者:
P. Antonelli
影响因子:
2.5
作者:
D. Bao;C. Robles;Zhongmin Shen
通讯作者:
D. Bao;C. Robles;Zhongmin Shen
DOI:
10.1007/978-3-642-24888-7_3
发表时间:
2012
期刊:
--
影响因子:
--
作者:
Xinyue Cheng;Z. Shen
通讯作者:
Xinyue Cheng;Z. Shen