Graph maps whose periodic points form a closed set

Graph maps whose periodic points form a closed set
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其周期点形成闭集的图映射

DOI:
10.1016/j.jmaa.2010.05.062
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发表时间:
2010-11
影响因子:
1.3
通讯作者:
Mai, Jie-Hua
Mai, Jie-Hua
中科院分区:
数学3区
文献类型:
--
作者:
Shao, Song;Mai, Jie-Hua

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从图G到其自身的连续映射f称为图映射。分别用P(f),R(f),ω(f),Ω(f)和CR(f)表示f的周期点集,回归点集,ω-极限点集,非游荡点集和链回归点集.众所周知,P(f)<$R(f)<$ω(f)<$Ω(f)<$CR(f)。Block和Franke(1983)[5]证明了:如果f:I→I是区间映射,P(f)是闭集,则CR(f)=P(f).本文证明了:如果f:G→G是图映射,P(f)是闭集,则ω(f)=R(f).并举例说明,对于一般的图映射f,当P(f)是闭集时,ω(f)=R(f)的结论不能加强为Ω(f)=R(f)或ω(f)=P(f).
A continuous map f from a graph G to itself is called a graph map. Denote by P(f), R(f), ω(f), Ω(f) and CR(f) the sets of periodic points, recurrent points, ω-limit points, non-wandering points and chain recurrent points of f respectively. It is well known that P(f)⊂R(f)⊂ω(f)⊂Ω(f)⊂CR(f). Block and Franke (1983) [5] proved that if f:I→I is an interval map and P(f) is a closed set, then CR(f)=P(f). In this paper we show that if f:G→G is a graph map and P(f) is a closed set, then ω(f)=R(f). We also give an example to show that, for general graph maps f with P(f) being a closed set, the conclusion ω(f)=R(f) cannot be strengthened to Ω(f)=R(f) or ω(f)=P(f).
DOI: 10.4064/fm196-1-2
发表时间: 2007
影响因子: 0.6
作者:
J. Mai;S. Shao
通讯作者: J. Mai;S. Shao
DOI: 10.1007/bfb0084762
发表时间: 1992-03
期刊: --
影响因子: --
作者:
Louis Block;W. A. Coppel
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发表时间: 2000-11
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L. Alsedà;J. Llibre;M. Misiurewicz
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DOI: 10.1090/s0002-9939-1983-0687650-2
发表时间: 1983-04
期刊: --
影响因子: --
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Louis Block;J. Franke
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DOI: 10.1090/s0002-9939-1982-0656122-2
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期刊: --
影响因子: --
作者:
Z. Nitecki
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