摘要
设L1n+1是截面曲率KL满足条件b/2<a≤KL≤b(a,b都是正实数)的局部对称Lorentz空间,Mn是L1n+1中具常平均曲率H的完备类空超曲面.利用极大值原理得到了Mn是全脐超曲面的三个充分条件.
Let Ln+11 be a locally symmetric Lorentz space with sectional curvature KL satisfy b/2〈a≤KL≤b,M^n be a complete hypersurface with constant mean curvature in Ln+11. the maximum principle is employed to obtain the three sufficient conditions for M^n to be totally umbilical ones.
出处
《德州学院学报》
2013年第2期29-32,共4页
Journal of Dezhou University
基金
国家自然科学基金项目(11161019)
关键词
局部对称
超曲面
平均曲率
locally symmetric
hypersurface
average curvature