Uniform conjugacy invariance of shifts of finite type

A shift space is a closed, shift-invariant subset of a full shift, and an SFT (shift of finite type) is a shift space defined by finitely many forbidden finite patterns. Two shift spaces are uniformly conjugate when they are related by a uniformly continuous conjugacy.

Uniform conjugacy invariance conjecture. Any shift which is uniformly conjugate to an SFT is itself an SFT.

This holds for shift spaces over the monoids N\mathbb{N} and Z\mathbb{Z}, but the proof in those cases does not extend to the general context. A positive answer to the paper's shadowing-property problem would also imply this conjecture.

Sources & referencesView supporting material

Primary source

Marcelo Sobottka, “Some notes on the classification of shift spaces: Shifts of Finite Type; Sofic Shifts; and Finitely Defined Shifts”, arXiv:2010.10595 (2022).

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