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arXiv 2609.20988math.CV

具有正实部导数的函数的边界几何与线性可达性

Boundary geometry and linear accessibility of functions with positive real derivative

  • National Institute of Technology, Kure College(国立高等专门学校广岛技术大学吴高专)
  • Yamaguchi University(山口大学)
  • University of International Business and Economics(对外经济贸易大学)

机构由 AI 辅助整理,请以论文原文为准。

Shota Hoshinaga, Ikkei Hotta, Li-Mei Wang

AI总结:

本文研究Noshiro--Warschawski类中函数的边界几何,利用近凸域与Loewner链揭示边界非局部连通性,并给出不属于星形函数类的显式例子。

AI中文摘要:

我们研究Noshiro--Warschawski类$\mathcal{R}$的边界几何。利用近凸域(close-to-convex domains)的几何结构及其与Loewner链的关系,我们探究$\mathcal{R}$中函数的边界行为。特别地,我们讨论了球面长度与局部连通性之间的关系,并证明$\mathcal{R}$中函数的像域边界不必是局部连通的。我们还重新审视了经典事实:$\mathcal{R}$不包含于星形函数类$\mathcal{S}^{*}$中,并给出一个属于$\mathcal{R}\setminus\mathcal{S}^*$的函数的简单显式例子。

英文摘要:

We study the boundary geometry of the Noshiro--Warschawski class $\mathcal{R}$. Using the geometric structure of close-to-convex domains and their relation to Loewner chains, we investigate the boundary behavior of functions in $\mathcal{R}$. In particular, we discuss the relation between spherical length and local connectedness, and show that the boundary of the image domain of a function in $\mathcal{R}$ need not be locally connected. We also revisit the classical fact that $\mathcal{R}$ is not contained in the class $\mathcal{S}^{*}$ of starlike functions and give a simple explicit example of a function in $\mathcal{R}\setminus\mathcal{S}^*$.

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