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Sofic profiles of \(S(\omega )\) and computability

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Abstract

We show that for every sofic chunk E there is a bijective homomorphism \(f:E_c \rightarrow E\), where \(E_c\) is a chunk of the group of computable permutations of \(\mathbb {N}\) so that the approximating morphisms of E can be viewed as restrictions of permutations of \(E_c\) to finite subsets of \(\mathbb {N}\). Using this we study some relevant effectivity conditions associated with sofic chunks and their profiles.

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Acknowledgements

The author is grateful to the anonymous referee for his thorough and essential remarks.

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Correspondence to Aleksander Ivanov.

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Ivanov, A. Sofic profiles of \(S(\omega )\) and computability. Arch. Math. Logic 60, 477–494 (2021). https://doi.org/10.1007/s00153-020-00757-0

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