摘要
本文考察了E4中可定向的超曲面,证明了若超曲面之平均曲率平行,则该曲面为全测地的。
This paper deals with the orientable hypersurface in the 4-dimensional Euclidean space E4.The hypersurface with parallel mean curvature vector H geedesic is prcved.
关键词
可定向超曲面
平均曲率
全测地
超曲面
orientable hypersurface, parallel mean curvature vector, totally geodesic