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arXiv 2011.13734math.CV
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平面连通区域的压缩函数

On the squeezing function for finitely connected planar domains

Pavel Gumenyuk, Oliver Roth

摘要:

在最近的一篇论文中,Ng,Tang和Tsai(Math.Ann.2020)通过Loewner微分方程找到了环的压缩函数的显式公式。他们的结果使他们猜想一个相应的公式为平面域的任何有限的连通性,说明极值的压缩函数问题是实现了适当选择的共形映射到一个圆形狭缝盘。在本文中,我们反驳了这一猜想。我们还给出了一个概念上简单的潜在理论证明的显式公式的压缩功能的一个环,它具有额外的优势,确定所有的极值函数。

英文摘要:

In a recent paper, Ng, Tang and Tsai (Math. Ann. 2020) have found an explicit formula for the squeezing function of an annulus via the Loewner differential equation. Their result has led them to conjecture a corresponding formula for planar domains of any finite connectivity stating that the extremum in the squeezing function problem is achieved for a suitably chosen conformal mapping onto a circularly slit disk. In this paper we disprove this conjecture. We also give a conceptually simple potential-theoretic proof of the explicit formula for the squeezing function of an annulus which has the added advantage of identifying all extremal functions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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