Journal
ERGODIC THEORY AND DYNAMICAL SYSTEMS
Volume -, Issue -, Pages -Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/etds.2023.19
Keywords
symbolic dynamics; subshifts of finite type; entropy
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This paper studies a finite type subshift S and a finite set S of finite words. It defines a subshift S(S) that avoids S and establishes a general criterion for bounding the entropy perturbation h(S) - h(S(S)) from above. As an application, it proves that this entropy difference tends to zero with a sequence of such sets S1, S2, ... under various assumptions on the S-i.
Given a subshift S of finite type and a finite set S of finite words, let S(S) denote the subshift of S that avoids S. We establish a general criterion under which we can bound the entropy perturbation h(S) - h(S(S)) from above. As an application, we prove that this entropy difference tends to zero with a sequence of such sets S1, S2, ... under various assumptions on the S-i.
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