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Entropy for Symbolic Dynamics with Overlapping Alphabets

机译:带有重叠字母的符号动力学的熵

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摘要

We consider shift spaces in which elements of the alphabet may overlap nontransitively. We define a notion of entropy for such spaces and show that it is equal to a limit of entropies of standard (non-overlapping) shifts when the underlying shift is of finite type. When a shift space with overlaps arises as a model for a discrete dynamical system with a finite set of overlapping neighborhoods, the entropy gives a lower bound for the topological entropy of the dynamical system.
机译:我们考虑移位空间,在该移位空间中,字母的元素可能会非传递地重叠。我们为此类空间定义了一个熵概念,并证明了当基础移位是有限类型时,它等于标准(非重叠)移位的熵极限。当具有重叠邻域的有限集合的离散动力系统的模型出现具有重叠的移位空间时,熵为动力系统的拓扑熵给出了下界。

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