The set of sequence entropies for graph maps

The set of sequence entropies for graph maps
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DOI:
10.1016/j.topol.2010.12.006
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发表时间:
2011-02
影响因子:
0.6
通讯作者:
Feng Tan
Feng Tan
中科院分区:
数学4区
文献类型:
--
作者:
Feng Tan

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设X是紧度量空间,f:X→X是连续的.设h ∈(f)是N的所有连续序列上的序列熵的上确界。已知如果X是有限树,则h ∈{∞,0,log 2}。本文主要研究有限图,得到了同样的结果.也就是说,如果X是一个有限图,则h ∈(f)∈{0,log 2,∞}。
Let X be a compact metric space and f:X→X be continuous. Let h⁎(f) be the supremum of sequence entropies over all subsequences of N. It is known that if X is a finite tree then h⁎(f)∈{∞,0,log2}. In this paper we focus on finite graph and obtain the same result. Namely, if X is a finite graph then h⁎(f)∈{0,log2,∞}.