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总览 评价 戴作科 , 董新汉 * ( 湖南师范大学数学与计算机科学学院,长沙,410006; ) 摘要: 设Ω和G都是边界局部连通的有界单连通区域,假设f是Ω到G的解析逆紧映射. 通过将单连通区域提升至单位圆盘,本文得到了G的边界点的分支数和其逆象点分支数之间的
戴作科, 董新汉*
(
湖南师范大学数学与计算机科学学院,长沙,410006; )
摘要:
设Ω和G都是边界局部连通的有界单连通区域,假设f是Ω到G的解析逆紧映射. 通过将单连通区域提升至单位圆盘,本文得到了G的边界点的分支数和其逆象点分支数之间的等式关系,并讨论了f的拓扑度和逆象点个数之间的不等式关系.
关键词:
割点;拓扑度;分支数
DAI Zuoke, DONG Xinhan*
(
College of Mathematics and Computer Science, Hunan Normal University,Changsha,410006; )
Abstract:
Let Ω and G be two simply connected domains with locally connected boundary, let f be a proper holomorphic mapping from Ω onto G. By lifting Ω and Gonto unit discs, the equality relationship between the component numbers of the point on ?G and the component numbers of its different inverse image points on ?Ω is obtained. The inequality relationship between the topological degree of f and the numbers of the different inverse image points is also discussed.
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