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arXiv 0906.5375math.DS
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拟不变测度、逃逸率和空穴效应

Quasi-Invariant measures, escape rates and the effect of the hole

Wael Bahsoun, Christopher Bose

摘要:

设$T$是分段扩张区间映射,$T_H$是$T$到带洞区间映射的抽象扰动.给定一个数$\ell$,$0<\ell<1$,我们计算了一个绝对连续条件不变测度(accim)的存在所需的洞的大小的上界,其逃逸率不大于$-\ln(1-\ell)$ .我们的方法的两个主要成分是乌拉姆的方法和抽象的扰动结果凯勒和利维拉尼。

英文摘要:

Let $T$ be a piecewise expanding interval map and $T_H$ be an abstract perturbation of $T$ into an interval map with a hole. Given a number $\ell$, $0<\ell<1$, we compute an upper-bound on the size of a hole needed for the existence of an absolutely continuous conditionally invariant measure (accim) with escape rate not greater than $-\ln(1-\ell)$. The two main ingredients of our approach are Ulam's method and an abstract perturbation result of Keller and Liverani.

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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