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Paper detail

Stem and topological entropy on Cayley trees

We consider the existence of the topological entropy of shift spaces on a finitely generated semigroup whose Cayley graph is a tree. The considered semigroups include free groups. On the other hand, the notion of stem entropy is introduced. For shift spaces on a strict free semigroup, the stem entropy coincides with the topological entropy. We reveal a sufficient condition for the existence of the stem entropy of shift spaces on a semigroup. Furthermore, we demonstrate that the topological entropy exists in many cases and is identical to the stem entropy.

preprint2021arXivOpen access
Jung-Chao BanChih-Hung ChangYu-Liang WuYu-Ying Wu
math.DS
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Jung-Chao BanChih-Hung ChangYu-Liang WuYu-Ying Wu

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