Bridge Theorem conjecture for topological and algebraic entropy

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Let SS be a cancellative left amenable monoid acting on the compact abelian group KK on the left by γ\gamma. Let γ^\widehat\gamma denote the induced dual action on the Pontryagin dual of KK. Bridge Theorem conjecture.

htop(γ)=halgr(γ^).h_{top}(\gamma)=h_{alg}^r(\widehat\gamma).

The conjecture is proposed without the hypothesis that the abelian group dual to KK is torsion, extending the bridge theorem proved in the paper under that hypothesis.

References

Primary source

Dikran Dikranjan, Antongiulio Fornasiero and Anna Giordano Bruno, “Algebraic entropy for amenable semigroup actions”, arXiv:1908.01983 (2019).

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