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2206.10511

Shift limits of a non-autonomous system

Dawoud Ahmadi Dastjerdi, Mahdi Aghaee

correctmedium confidence
Category
Not specified
Journal tier
Specialist/Solid
Processed
Sep 28, 2025, 12:56 AM

Audit review

The paper establishes, with correct proofs, that in a surjective IFS over the shift-limit set Σ of a transitive t, specification (SP), strong specification (SSP), shadowing, and hence LWS transfer from t to every σ ∈ Σ; and in the sofic case, a point that is periodic along some σ projects to periodicity along a periodic σ′ ∈ Σ. The candidate solution correctly reconstructs SP, shadowing, LWS-transfer, and the sofic periodic projection using arguments substantially aligned with the paper. However, it explicitly omits a complete proof for SSP, which the paper covers (by the same scheme as SP). Since the problem encompasses Γ = {SP, SSP, LWS, shadowing}, the model’s solution is incomplete with respect to SSP, so we judge it incorrect for the full task.

Referee report (LaTeX)

\textbf{Recommendation:} minor revisions

\textbf{Journal Tier:} specialist/solid

\textbf{Justification:}

The paper provides concise, correct transfer results for specification (including strong specification) and shadowing from a transitive code to all shift limits in surjective IFS settings, and a clean periodic projection result for sofic shifts. The arguments are standard but well-coordinated. Minor improvements in exposition (explicitly tracking assumptions and fleshing out the SSP case) would enhance clarity, but no major technical gaps were identified.