Equality of pressure on a CMS and its completion

From papers

Let (Σ,σ)(\Sigma,\sigma) be a finite entropy countable Markov shift, let ρ\rho be a totally bounded metric on its vertex set, and let dd be the corresponding metric on Σ\Sigma. Write Σˉ\bar\Sigma for the completion of Σ\Sigma, and denote by PΣP_\Sigma and PΣˉP_{\bar\Sigma} the corresponding pressure functions. Pressure equality conjecture. For every φC(Σˉ,R)\varphi\in C(\bar\Sigma,\mathbb R),

PΣ(φ)=PΣˉ(φ).P_\Sigma(\varphi)=P_{\bar\Sigma}(\varphi).

This conjecture asks whether completing the shift space changes the pressure of any continuous potential. Its status is not resolved by the supplied text.

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Sources & referencesView supporting material

Primary source

Godofredo Iommi and Mike Todd, “Differentiability of the pressure in non-compact spaces”, arXiv:2010.10250 (2022).

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