张量计算.如图所示,

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 08:05:22
张量计算.如图所示,张量计算.如图所示,张量计算.如图所示,Forsurface,thesectional(Gaussian)curvatureisexactlyhalfofthescalarcurv

张量计算.如图所示,
张量计算.
如图所示,

张量计算.如图所示,
For surface, the sectional(Gaussian) curvature is exactly half of the scalar curvature:
K= R/2
And the Ricci curvature can be expressed as
R_{ab} = K g_{ab}
Where g_{ab} is the metric tensor.
So G_{ab} = R_{ab} - R/2 g_{ab}
= K g_{ab} - R/2 g_{ab}
= K g_{ab} - K g_{ab}
= 0

xx

不好意思,我不会