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2410.18350

Classifying hyperbolic ergodic stationary measures on compact complex surfaces with large automorphism groups

Megan Roda

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

Audit review

The paper proves the trichotomy and Γμ-invariance under the stated hypotheses via a Benoist–Quint/entropy–holonomy–QNI framework, with precise entropy inequalities and a detailed joint integrability argument. By contrast, the model’s solution makes unjustified leaps: (i) it invokes the Avila–Viana invariance principle without verifying the required hypotheses in this nonuniform random context, (ii) it incorrectly derives δ^s=1 from δ^u=1 by a symmetric argument that does not follow from the assumption λ+ + λ− ≥ 0, and (iii) it overstates Cantat–Dujardin’s rigidity as implying Γμ-invariance of any non-atomic stationary measure, which their results do not assert in this generality. The paper’s argument is coherent and complete modulo its stated reliance on forthcoming results of Brown–Eskin–Filip–Rodriguez Hertz; the model’s proof outline misses key technical steps.

Referee report (LaTeX)

\textbf{Recommendation:} major revisions

\textbf{Journal Tier:} strong field

\textbf{Justification:}

The manuscript establishes a sharp trichotomy and Γμ-invariance for hyperbolic stationary measures on compact complex surfaces with non-elementary automorphism groups. It leverages a thoughtful mix of smooth/random dynamics and tools inspired by the Benoist–Quint program. The results are of clear interest and the exposition is solid. However, key steps depend on a forthcoming work by Brown–Eskin–Filip–Rodríguez Hertz; the paper should more explicitly isolate, restate, and (where possible) supply proofs or reductions for the needed statements. With those dependencies addressed, the paper would merit publication in a strong field journal.