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arXiv 2501.06347math.CV
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每个圆周同胚都是两个焊接的复合

Every circle homeomorphism is the composition of two weldings

Alex Rodriguez

AI总结:

本文利用 Bishop 的对数奇异映射并提出对数奇异集,证明任意保向圆周同胚均可分解为两个共形焊接同胚的复合,从而说明共形焊接同胚不满足复合封闭性。

摘要:

我们证明,每个保向圆周同胚都是两个共形焊接同胚的复合,这意味着共形焊接同胚在复合下不封闭。我们的方法使用 Bishop 引入的对数奇异映射。所引入的主要工具是对数奇异集,即零容量集,它允许一个对数奇异映射将其补集映为零容量集。

英文摘要:

We show that every orientation-preserving circle homeomorphism is a composition of two conformal welding homeomorphisms, which implies that conformal welding homeomorphisms are not closed under composition. Our approach uses the log-singular maps introduced by Bishop. The main tool that we introduce are log-singular sets, which are zero capacity sets that admit a log-singular map that maps their complement to a zero capacity set.

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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