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arXiv 1108.2899math.DS
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图homotopic to a constant映射的轨道周期

Periods of orbits for maps on graphs homotopic to a constant map

Chris Bernhardt, Zach Gaslowitz, Adriana Johnson, Whitney Radil

摘要:

本文证明了两个关于与常数映射同伦且顶点构成周期轨的图的映射的周期轨集的定理。第一个结果是,如果$v$不是$2^k$的约数,则必须存在周期为$2^k$的周期点。第二个是如果对奇数$s>1$有$v=2^ks$,则对所有$r>s$存在最小周期点$2^k r$ .然后将这些结果与正整数的Sharkovsky排序进行比较。(The本文的最终版本将发表在《差分方程与应用杂志》上。

英文摘要:

The paper proves two theorems concerning the set of periods of periodic orbits for maps of graphs that are homotopic to the constant map and such that the vertices form a periodic orbit. The first result is that if $v$ is not a divisor of $2^k$ then there must be a periodic point with period $2^k$. The second is that if $v=2^ks$ for odd $s>1$, then for all $r>s$ there exists a periodic point of minimum period $2^k r$. These results are then compared to the Sharkovsky ordering of the positive integers. (The final version of this paper will appear in the Journal of Difference Equations and Applications.)

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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