摘要
It is proved that a Riemannian manifold M isometrically immersed ina Sasakian space form M%26#732;(c) of constant %26#966;-sectionalcurvature c%26#60;1, with the structure vector field %26#958; tangent toM, satisfies Chen%26apos;s basic equality if and only if it is a3-dimensional minimal invariant submanifold.
- 出版日期2003