arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.01361math.DS
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关于收缩目标和自回归点

On shrinking targets and self-returning points

Maxim Kirsebom, Philipp Kunde, Tomas Persson

摘要:

我们考虑点的集合$\mathcal{R}_\mathrm{io}$无限次地返回到围绕它们自己的收缩目标序列。在额外的假设下,我们改进了Boshernitzan的开创性结果的复发速度。对于$d$维环面上的加倍映射以及某些线性映射,我们甚至得到了$\mathcal{R}_\mathrm{io}$具有测度0或1的二分法条件.此外,我们研究的点集最终总是返回,并证明了类似的Boshernitzan的结果在类似的一般性。

英文摘要:

We consider the set $\mathcal{R}_\mathrm{io}$ of points returning infinitely many times to a sequence of shrinking targets around themselves. Under additional assumptions we improve Boshernitzan's pioneering result on the speed of recurrence. In the case of the doubling map as well as some linear maps on the $d$ dimensional torus, we even obtain a dichotomy condition for $\mathcal{R}_\mathrm{io}$ to have measure zero or one. Moreover, we study the set of points eventually always returning and prove an analogue of Boshernitzan's result in similar generality.

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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