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arXiv 1405.0481math.DS
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关于置换复合下分段扩张映射的混合性质,II:非常数定向映射

On the mixing properties of piecewise expanding maps under composition with permutations, II: Maps of non-constant orientation

Nigel P. Byott, Congping Lin, Yiwei Zhang

摘要:

对于整数$m \geq 2$,设$\mathcal{P}_m$是单位区间$I$划分为$m$相等子区间的剖分,$\mathcal{F}_m$是$I$上的分段线性映射类,在$\mathcal{P}_m$的每个元素上具有常数斜率$\pm m$.我们研究当$f \in \mathcal{F}_m$与由置换$σ\in S_N$互换$\mathcal{P}_N$的$N$子区间给出的区间交换映射组合时对混合性质的影响。这扩展了以前的论文[N. P. Byott,M. Holland和Y. Zhang,DCDS,{ \bf 33},(2013)3365- 3390],其中我们仅考虑“拉伸和折叠”图$f_{sf}(x)=mx \bmod 1$。

英文摘要:

For an integer $m \geq 2$, let $\mathcal{P}_m$ be the partition of the unit interval $I$ into $m$ equal subintervals, and let $\mathcal{F}_m$ be the class of piecewise linear maps on $I$ with constant slope $\pm m$ on each element of $\mathcal{P}_m$. We investigate the effect on mixing properties when $f \in \mathcal{F}_m$ is composed with the interval exchange map given by a permutation $σ\in S_N$ interchanging the $N$ subintervals of $\mathcal{P}_N$. This extends the work in a previous paper [N.P. Byott, M. Holland and Y. Zhang, DCDS, {\bf 33}, (2013) 3365--3390], where we considered only the "stretch-and-fold" map $f_{sf}(x)=mx \bmod 1$.

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