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2109.07941

Joint Ergodicity of Hardy Field Sequences

Konstantinos Tsinas

correctmedium confidence
Category
Not specified
Journal tier
Strong Field
Processed
Sep 28, 2025, 12:56 AM

Audit review

The paper proves the joint ergodicity theorem for Hardy-field sequences under the stated ‘logarithmic separation from CZ[t]’ hypothesis and identifies the L2-limit as the product of integrals. The model’s write-up cites Tsinas (2021) itself as a black-box theorem to conclude exactly the statement that the paper is proving, without providing an independent argument or reduction; this is circular. The paper’s proof is complete and coherent, relying on Host–Kra factors, reduction to seminorm estimates plus equidistribution, and careful polynomial-approximation arguments, whereas the model’s solution does not engage with these steps.

Referee report (LaTeX)

\textbf{Recommendation:} minor revisions

\textbf{Journal Tier:} strong field

\textbf{Justification:}

The manuscript establishes a comprehensive joint-ergodicity theorem for Hardy-field sequences under natural separation assumptions, confirming a conjecture and unifying previous partial results. The proof strategy is robust and well aligned with contemporary ergodic theory, combining Host–Kra characteristic factors, polynomial approximations on large intervals, and an equidistribution reduction. While the exposition is generally clear, a few roadmap and context enhancements would benefit readers.