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Shadowing for families of endomorphisms of generalized group shifts (2011.01524v2)

Published 31 Oct 2020 in math.DS, cs.IT, math.CO, math.GR, and math.IT

Abstract: Let $G$ be a countable monoid and let $A$ be an Artinian group (resp. an Artinian module). Let $\Sigma \subset AG$ be a closed subshift which is also a subgroup (resp. a submodule) of $AG$. Suppose that $\Gamma$ is a finitely generated monoid consisting of pairwise commuting cellular automata $\Sigma \to \Sigma$ that are also homomorphisms of groups (resp. homomorphisms of modules) with monoid binary operation given by composition of maps. We show that the valuation action of $\Gamma$ on $\Sigma$ satisfies a natural intrinsic shadowing property. Generalizations are also established for families of endomorphisms of admissible group subshifts.

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