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arXiv 1901.01533math.DS
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圆映射的大直径周期轨道

Periodic orbits of large diameter for circle maps

Lluís Alsedà, Sylvie Ruette

摘要:

设$f$是一个连续圆映射,$F$是$f$的提升.本文研究了$F$大轨道的存在如何影响它的周期集。更精确地说,我们表明,如果$F$是度$d\geq 1$,并有一个直径大于1的周期轨道,那么$F$有周期点$n$的所有整数$n\geq 1$,因此有$f$。我们还给出了例子表明,这一结果不成立时,度是非正的。

英文摘要:

Let $f$ be a continuous circle map and let $F$ be a lifting of $f$. In this note we study how the existence of a large orbit for $F$ affects its set of periods. More precisely, we show that, if $F$ is of degree $d\geq 1$ and has a periodic orbit of diameter larger than 1, then $F$ has periodic points of period $n$ for all integers $n\geq 1$, and thus so has $f$. We also give examples showing that this result does not hold when the degree is non positive.

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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