Polynomial Sarnak's conjecture for minimal systems III

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Let p:N→N0p:\mathbb{N}\to\mathbb{N}_0 be a polynomial and let (X,T)(X,T) be a minimal topological dynamical system. For f∈C(X)f\in C(X) and x∈Xx\in X, consider the sequence (f(Tp(n)x))(f(T^{p(n)}x)). Polynomial Sarnak's conjecture for minimal systems III. If this sequence has topological entropy zero, then

lim⁡N→∞1N∑n=1Nμ(n)f(Tp(n)x)=0.\lim_{N\to\infty}\frac{1}{N}\sum_{n=1}^N\mu(n)f(T^{p(n)}x)=0.

This formulation imposes the entropy-zero condition directly on the sampled observable sequence rather than on the whole system. The source presents it as a conjecture and gives no resolution; minimality remains part of the hypothesis.

References

Primary source

Tanja Eisner, “A polynomial version of Sarnak's conjecture”, arXiv:1501.04323 (2018).

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