拟双曲覆盖映射的特征  

Characterization of Quasi-Hyperbolic Covering Mapping

作　　者：郭彦平[1] 冯庆富[1] 

机构地区：[1]河北轻化工学院基础课部

出　　处：《河北轻化工学院学报》1995年第3期1-4,共4页

摘　　要：设ｆ是紧致不带边流形Ｍ上的覆盖映射，证明了ｆ是拟双曲覆盖映射的充分必要条件是（Ｉ－ｆ＊）为单射且有闭值域。Let f be a covering mapping of a compact manifold M without boundary.It is shown that the necessary and sufficient condition of the quasi-hyperbolic covering mapping of f is that (I-f) is injective and has closed range.

关 键 词：覆盖映射 拟双曲覆盖映射 微分方程 

分 类 号：O175[理学—数学]