它进一步说明一个四元流形的截面曲率的估计对许多对称黎曼空间都是有效的。

It proves that the estimate sectional curvature of a quaternion manifold is very useful for Riemann symmetric space.

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本文研究了伪黎曼空间型中具有常平均曲率的类空子流形，得到了这类空子流形的一个积分不等式及刚性定理。

This paper discusses the space-like submanifolds with constant mean curvature in a pseudo-Riemannian space form, and obtain an integrate inequality and a rigidity theorem.

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研究拟常曲率黎曼流形中具有平行平均曲率向量的紧致子流形。

The compact submanifolds in quasi constant curvature Riemannian manifolds with Parallel Mean Curature Vector were studied.

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