unit tangent vector

In this paper, we give an explicit representation of the Sasaki metric on a vector bundle. In particular, we get Sasaki metric on unit tangent bundle T_1S~ ( 2n+ 1), by which we calculate the volume of the Hopf vector field V_h.

本文给出了矢丛上Sasaki度量的局部表示，特别得到单位切丛T1S~（2n+1）上Sasaki度量的表达式。

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