Strictly Convex Steklov-Isospectral Plane Domains

Tao Hu, Jiachen Shi, Quanyu Tang

There are noncongruent simply connected strictly convex Euclidean plane domains with real-analytic boundaries and identical Steklov spectra, including multiplicities. Such pairs can approach a disk smoothly.

Sources for this record

What was already known

The planar Steklov analogue of Kac’s question remained open in this restrictive class; Sunada and orbifold methods supplied a general template.

AI involvement AI-centered

Hu, Shi and Tang supplied the initial Sunada adaptation. Their disclosure credits ChatGPT with substantial development of the concrete counterexample, especially passage from orbifold quotients to weighted disks and Euclidean plane domains, and technical propositions. That retained construction is AI-centered within a human-led project.

The authors identify model development of the concrete counterexample, not just editing or routine calculations, while crediting their own overall strategy.

Importance Notable

Answers the planar inverse-Steklov question even for strictly convex analytic domains.

Limitations

Hu, Shi and Tang supplied the Sunada strategy and checked, revised and rewrote the model-assisted construction. No separate external full-proof check is documented.

Technical verification Formal (human)

The authors explicitly say they checked the model-assisted construction and technical arguments before revising the final proof. This is a source-reported complete author check; no machine check is documented.

Formal checking

Author checking, revision and rewriting of the model-assisted arguments

Checker
Tao Hu, Jiachen Shi and Quanyu Tang
Scope
Theorem 1.1.2 construction, including weighted-disk transfer, Euclidean realization and supporting Propositions 2.3.1, 2.4.1 and 3.4.1
Basis
Reported by the linked checker
Evidence source

Checking a formal statement does not establish that it matches the original problem.

Human understanding Full

The authors identify the original strategy and explain the concrete mechanism and each realization step in the final paper.

Correction and publication history