【摘要】 研究了2个嵌套空间中子流形,对于局部对称空间中的常曲率黎曼子流形以及常曲率黎曼子流形中具有平行平均曲率向量的紧致伪脐子流形,给出了这种伪脐子流形是全脐子流形的两个充分条件.更多还原

【Abstract】 Submanifolds in two nested space are discussded.For constant submanifolds in locally symmetric space,and pseudo-umbilical submanifold with parallel mean curvature vector in constant space,two sufficient conditions are given for pseudo-umbilical submanifold to be a totally umbilical submanifold in constant space.更多还原