Intrinsic Negative Sobolev Norms at a Fixed First Eigenvalue
Manuscript 27 October 2026 · Online 27 October 2026
Abstract
We construct smooth positive unit-area conformal metrics on the two-sphere with first nonzero Laplace eigenvalue exactly 6*pi, while the intrinsic H^-1 norm of the conformal factor diverges uniformly over all round conformal parametrizations. The norm uses the scalar-function pairing with the varying metric's area measure. An explicit family of antipodal polynomial caps is small in L^(3/2) but large in L2. A variance-continuity lemma allows exact eigenvalue tuning, and the Mobius Jacobian formula prevents any conformal reparametrization from removing the growth. The five-page manuscript gives a complete proof and exact rational diagnostics. It distinguishes this counterexample from known positive bounds for the area measure in a fixed round-background Sobolev dual. The relation to Nadirashvili's printed 2009 conjecture, represented by UnsolvedMath OWR-3389-011, is explicitly qualified by the choice of pairing; no unqualified original-source closure is claimed. This is an unrefereed preprint, without a claim of absolute priority or formal verification.
Record
- Affiliation
- Mercury Software GmbH
- Contact
- [email protected] · GitHub
- Result
- Complete scoped counterexample
- Categories
- math.DG · math.SP · math.AP
- Manuscript
- 27 October 2026
- Online release
- 27 October 2026
- Version
- 1.0
- License
- Creative Commons Attribution 4.0 International
Files and verification
The PDF is the canonical reading copy. The source archive contains the LaTeX manuscript, bibliography, reproducibility material, and audit documents without build artefacts.
Citation
Alper Ferudun, “Intrinsic Negative Sobolev Norms at a Fixed First Eigenvalue,” EulerSolve Research Papers, OWR-3389-011, 2026. https://doi.org/10.5281/zenodo.23676435.
BibTeX
@misc{ferudun2026intrinsicnorm,
author = {Ferudun, Alper},
title = {Intrinsic Negative Sobolev Norms at a Fixed First Eigenvalue},
year = {2026},
howpublished = {EulerSolve Research Papers},
url = {https://eulersolve.org/papers/owr-3389-011/},
doi = {10.5281/zenodo.23676435},
note = {OWR-3389-011; unrefereed preprint}
}