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• 数学 • 上一篇    下一篇

平均曲率为常数迷向子流形的注记

尹松庭1,2, 宋卫东2   

  1. 1. 铜陵学院 基础教育系, 安徽 铜陵 244000; 2. 安徽师范大学 数学计算机科学学院, 安徽 芜湖 241000
  • 收稿日期:2007-06-28 修回日期:1900-01-01 出版日期:2008-05-26 发布日期:2008-05-26
  • 通讯作者: 宋卫东

A Note of Isotropic Submanifolds with Constant Mean Curvature

YIN Songting1,2, SONG Weidong2   

  1. 1. Department of Basic Education, Tongling College, Tongling 244000, Anhui Province, China;2. College of Mathematics and Computer Science, Anhui Normal University, Wuhu 241000, Anhui Province, China
  • Received:2007-06-28 Revised:1900-01-01 Online:2008-05-26 Published:2008-05-26
  • Contact: SONG Weidong

摘要: 设Mn为Sn+p(c)中迷向子流形, H为Mn的常数平均曲率. 应用迷向浸入的等价条件和散度定理得出: 若Mn的截面曲率处处不小于[n/2(n+1)](H2+c), 则Mn或是全脐的或是Sn+p(c)中某个全脐超曲面中的Veronese流形.

关键词: 平均曲率, 迷向子流形, 全脐子流形

Abstract: Let Mn be an isotropic submanifold of Sn+p(c), constantH be mean curvature of Mn. Under the condition of equivalence of isotropic submanifolds and via divergence theorem, it is concluded that if the section curvature of Mn is not less than [n/2(n+1)](H2+c), then Mnis a totally umblilic submanifold or a Veronese submanifold in a totally umbilical hypersurface of Sn+p(c).

Key words: mean curvature, isotropic submanifolds, totally umbilic submanifolds

中图分类号: 

  • O186