摘要
对非零截面曲率子流形何时是Einstein流形的问题进行讨论,获得了一些结果.
This paper gives two sufficient conditions which guarantee that a submanifold with non zero sectional curvature is an Einstein manifold.
出处
《四川师范大学学报(自然科学版)》
CAS
CSCD
1998年第5期514-518,共5页
Journal of Sichuan Normal University(Natural Science)
关键词
截面曲率
黎曼流形
子流形
非零截面曲率
Sectional Curvature
Einstein manifold
Ricci tensor
The second fundamental form
Space form