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2112.09041

Ahlfors-regular conformal dimension and energies of graph maps

Kevin M. Pilgrim, Dylan P. Thurston

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

Audit review

The paper proves Theorem A with a complete modulus-based argument: (i) it sets up visual metrics and snapshot covers, (ii) relates combinatorial modulus on J to weighted multi-curve energies on Gn, and (iii) derives the two inequalities and the critical-equality Eq=1 at q=ARCdim via Propositions 6.5 and 6.8 together with Theorem 5.11 and Corollary 5.12 . By contrast, the model’s writeup asserts key steps without justification: (a) it replaces the paper’s star-covers Vn by edge-preimages Ke and assumes admissibility of test weights ωn(e)=diam(K_e) for the q-energy, and (b) it builds a path metric dq and a Carathéodory measure μq from extremal weights ρn and claims Ahlfors q-regularity and visuality. These require nontrivial connectivity/overlap and diameter–length comparability results that the paper avoids precisely by working with stars and combinatorial modulus; they are not supplied by the model and are generally false without additional hypotheses. Hence, as a proof, the model’s solution is incomplete.

Referee report (LaTeX)

\textbf{Recommendation:} minor revisions

\textbf{Journal Tier:} strong field

\textbf{Justification:}

The manuscript gives a robust and general theorem tying Ahlfors-regular conformal dimension to a computable energy invariant for graph endomorphisms, with careful development of the visual metric and combinatorial modulus tools. The upper and lower bounds are cleanly executed, and the applications are illustrative. Minor clarifications would further aid readers navigating the technical comparisons between graph energies and moduli.