Back to search
2104.05941

On the Structure of Periodic Eigenvalues of the Vectorial p-Laplacian

Changjian Liu, Meirong Zhang

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

Audit review

The paper rigorously proves Theorem 1.1 via a scaling reduction to an integrable planar system and the functions Tp(μ), Sp(μ), then uses a careful number-theoretic selection to obtain infinitely many integer‑independent sequences Λm = {(2n̟m)p} (see Theorem 1.1 and its proof outline; Sp,Tp construction; Lemma 4.1; limits as μ→1) . The candidate’s proof sketches a different approach using an apsidal‑angle argument, but makes critical errors: (i) it asserts a 0 lower endpoint for the apsidal increment, contradicting the paper’s limit Sp(μ)→1/2 as μ↓0 (thus Δθ→π per full cycle) ; and (ii) it claims one can choose a subsequence of minimal periods Pm accumulating to 2π to guarantee non‑integer ratios, whereas the paper’s analysis shows that, for closed orbits built from rationals ℓ/m, the minimal periods scale like m·(2πTp(μ)) and in fact ̟m→∞ in the constructed sequences . These gaps invalidate the model’s argument for the integer‑independence property.

Referee report (LaTeX)

\textbf{Recommendation:} minor revisions

\textbf{Journal Tier:} strong field

\textbf{Justification:}

The paper provides a clear, constructive resolution of a two-decade-old open problem on periodic eigenvalues for the vectorial p-Laplacian in the plane. The reduction to a planar integrable system and the introduction of the functions Tp and Sp effectively bridge dynamics and spectral theory. The integer-independence argument is careful. Minor clarifications (e.g., asymptotic limits stated without proof, notational conventions) would enhance accessibility without affecting correctness.