Some classes of sprays in projective spray geometry

Some classes of sprays in projective spray geometry
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DOI:
10.1016/j.difgeo.2011.04.041
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发表时间:
2011-08
影响因子:
0.5
通讯作者:
Guojun Yang
Guojun Yang
中科院分区:
数学4区
文献类型:
--
作者:
Guojun Yang

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本文研究了喷雾几何和芬斯勒几何中射影变化的一些性质。首先,得到了投影相关Finsler度量的Ricci曲率的比较定理。其次,研究了一类投影平面喷雾器的性质,特别指出了存在许多不能被任何(甚至奇异)Finsler度量诱导的各向同性喷雾器。
This paper studies some properties of projective changes in spray and Finsler geometry. Firstly, it obtains a comparison theorem on Ricci curvature for projectively related Finsler metrics. Secondly, it studies the properties of a class of projectively flat sprays, which particularly shows that there exist many isotropic sprays that cannot be induced by any (even singular) Finsler metrics.