Topological properties of cellular automata on trees

We prove that there do not exist positively expansive cellular automata defined on the full k-ary tree shift (for k>=2). Moreover, we investigate some topological properties of these automata and their relationships, namely permutivity, surjectivity, preinjectivity, right-closingness and open...

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Bibliographic Details
Main Authors: Gabriele Fici, Francesca Fiorenzi
Format: Article
Language:English
Published: Open Publishing Association 2012-08-01
Series:Electronic Proceedings in Theoretical Computer Science
Online Access:http://arxiv.org/pdf/1208.2766v1