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2211.03448

STABLE CLT FOR DETERMINISTIC SYSTEMS

Zemer Kosloff, Dalibor Volný

correctmedium confidence
Category
math.DS
Journal tier
Strong Field
Processed
Sep 28, 2025, 12:56 AM

Audit review

The paper proves that for every ergodic aperiodic probability-preserving system and every α in (0,2), there exists an observable f with n^{-1/α} S_n(f) converging in distribution to a symmetric α-stable law with any prescribed dispersion σ; see Theorem 1 and its proof, including the final rescaling to arbitrary σ . The candidate solution correctly invokes exactly this result and then (redundantly but harmlessly) rescales to match a target σ, and notes that convergence in distribution implies cdf convergence at all t because the limit law is non-atomic, as also noted in the paper’s preliminaries . The model’s write-up does not reproduce the paper’s constructive proof (triangular array, discretization, and embedding via the Alpern-lemma–independent partition), but it is a valid solution by citation.

Referee report (LaTeX)

\textbf{Recommendation:} minor revisions

\textbf{Journal Tier:} strong field

\textbf{Justification:}

This work resolves a compelling existence problem for stable limit theorems in deterministic dynamical systems, achieving the iid-type normalization n\^{1/α} across the full α∈(0,2) range. The construction is careful and technically sound, leveraging a novel combination of truncated stable arrays and an embedding independent of a partition. While the exposition is strong, a few clarifications (e.g., emphasizing why no slowly varying factor appears) would further help readers. Overall, I recommend minor revisions.