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- 2016
局部对称伪黎曼流形中的2-调和类时子流形
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Abstract:
摘要： 利用活动标架法,研究了局部对称伪黎曼流形中的2-调和类时子流形,得到了这类子流形的Simons型积分不等式以及关于其第二基本形式模长平方的拼挤定理。
Abstract: Based on the moving frames, the 2-harmonic timelike submanifolds in locally symmetric pseudo-Riemannian manifolds is studied. Also, an integral inequality of Simonss type and a pinching theorem about the squared norm of the second fundamental form in this submanifolds are obtained
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