摘要
利用Hamel关于射影平坦的基本方程,我们导出了Randers度量的λ形变保持射影平坦的充分条件.特别,对一类具有特殊旗曲率性质的Randers度量我们证明了这类度量一定存在保持射影平坦性的λ形变.
By using Hamel's fundamental equation of projective flatness we identify when the γ-deformations of Randers metrics preserve the property of being projectively flat. In particular, we show that there exists a γ-deformation perserving projective flatness for a class of Randers metric with special flag curvature.
出处
《数学进展》
CSCD
北大核心
2008年第1期47-56,共10页
Advances in Mathematics(China)