The topological entropy of cellular automata is uncomputable

Author:

Hurd Lyman P.,Kari Jarkko,Culik Karel

Abstract

AbstractThere is no algorithm which will take a description of a celluar automaton and determine whether it has zero topological entropy, or for any fixed ε > 0 compute its topological entropy to a tolerance e. Furthermore a set of aperiodic Wang tiles arising from Penrose's kite and dart tiles is used to demonstrate specific examples of cellular automata with a single periodic point but non-trivial non-wandering sets, which furthermore can be constructed to have arbitrarily high topological entropy.

Publisher

Cambridge University Press (CUP)

Subject

Applied Mathematics,General Mathematics

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