The general event horizon formula of black hole is given from null hypersurface equation.
曲面方程出发,导出了黑洞视界面的普遍公式.
The general event horizon formula of black hole is given from null hypersurface equation.
曲面方程出发,导出了黑洞视界面的普遍公式.
In this paper , a rigidity theorem of hypersurface in real space form will begiven.In addition, we obtain rigidity theorems of submanifold in sphere which improvethe result of Hou and Xu.
本文给出实空间形式中超曲面的一个刚性
理，同时也得到求面中子流形的刚性结果.
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