arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2401.16636math.DS
收藏

带标记有理映射的曲线吸引子

Curve attractors for marked rational maps

Zachary Smith

AI总结:

针对Pilgrim提出的非灵活Lattès的有理Thurston映射都有有限全局曲线吸引子的猜想,本文证明了标记集4点、后临界集2或3点时该结论成立,并探讨了特殊情形推广与一般情形思路。

摘要:

带标记集A的Thurston映射f: (S², A) → (S², A)会在(S², A)中Jordan曲线的同痕类上诱导一个拉回关系。若在迭代该拉回关系后,每条曲线都归入有限个可能的曲线类,则称配对(f,A)具有有限全局曲线吸引子。Pilgrim猜想,所有非灵活Lattès映射的有理Thurston映射都具有有限全局曲线吸引子。本文给出了该问题的部分进展。具体而言,我们证明:若A包含4个点,且后临界集(为A的子集)包含2个或3个点,则(f,A)具有有限全局曲线吸引子。我们还讨论了将主结果推广到f具有4个后临界点且A=P_f的某些特殊情形的情况。此外,我们推测了其中部分思路可如何应用于更一般的情形。

英文摘要:

A Thurston map $f\colon (S^2, A) \to (S^2, A)$ with marking set $A$ induces a pullback relation on isotopy classes of Jordan curves in $(S^2, A)$. If every curve lands in a finite list of possible curve classes after iterating this pullback relation, then the pair $(f,A)$ is said to have a finite global curve attractor. It is conjectured by Pilgrim that all rational Thurston maps that are not flexible Lattès maps have a finite global curve attractor. We present partial progress on this problem. Specifically, we prove that if $A$ has four points and the postcritical set (which is a subset of $A$) has two or three points, then $(f,A)$ has a finite global curve attractor. We also discuss extensions of the main result to certain special cases where $f$ has four postcritical points and $A=P_f$. Additionally, we speculate on how some of these ideas might be used in the more general case.

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。

↑