n.超曲面
The general event horizon formula of black hole is given from null hypersurface equation. 從零曲面方程出發(fā)
The former is described by a few equations, whereas the latter requires the specification of vast amounts of initial data on some hypersurface. 前者只包含了幾個(gè)方程式，而后者卻需要在某個(gè)超曲面（hypersurface）上，給定一大堆初始資料。
In this paper,an intrinsic condition for a Compact Space-like hypersurface with constant scalar curvature in a de Sitter space to be totally umbilical is obtained. 在這篇文章中
In this paper, an intrinsic condition for a Compact Space-like hypersurface with constant scalar curvature in a de Sitter space to be totally umbilical is obtained. 摘要在這篇文章中，討論了具有常數(shù)量曲率的擬緊致超曲面，并給出了它是全臍子流形的一個(gè)全臍條件。
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. 本文給出實(shí)空間形式中超曲面的一個(gè)剛性定理，同時(shí)也得到求面中子流形的剛性結(jié)果.
