Ahlfors覆盖曲面理论中的分支值
复变函数
2018-10-17 v1
摘要
在涉及q个点组成的集合E_{q}的Ahlfors第二基本定理的常数研究中,覆盖曲面在E_{q}之外的分支值带来许多麻烦。为避免此种情形,对给定曲面S,构造一新曲面S0使得L(S0) <= L(S)且H(S0) >= H(S),并且S0的所有分支值都包含在E_{q}中是有用的。本文的目标是证明这样的S0的存在性,这推广了Zhang G.Y.: The precise bound for the area-length ratio in Ahlfors' theory of covering surfaces. Invent math 191:197-253(2013)中的引理9.1与定理10.1。
引用
@article{arxiv.1810.06857,
title = {Branch values in Ahlfors' theory of covering surfaces},
author = {Zonghan Sun and Guangyuan Zhang},
journal= {arXiv preprint arXiv:1810.06857},
year = {2018}
}
备注
This paper is a preparation for the further research on Ahlfors' theorey of covering surfaces