Martin Kernels without Green-Line Contact on an Annulus
Manuscript 26 October 2026 · Online 26 October 2026
Abstract
Arsove and Johnson asked whether every normalized Martin kernel on a multiply connected Green domain agrees with the Harnack envelope along a Green line issuing from the normalization point. We give a negative answer on the circular annulus exp(-pi/2)<|z|<exp(pi/2), based at1. For every outer boundary point whose argument differs from pi by at most1/40, its minimal Martin kernel lies strictly below the envelope throughout one common punctured neighborhood of1, with gap at least |log z|/25. Periodizing the elementary strip Poisson kernel gives explicit formulas. Four competing normalized kernel gradients form a rectangle containing all target gradients strictly in its interior; elementary series inequalities and uniform Taylor estimates give the gap. A Green-function quotient and boundary-measure argument verify the Martin interpretation and minimality. This is a complete negative answer to Hayman-Lingham Problem7.42 (UnsolvedMath AMR-022-7042). The five-page manuscript includes reproducible symbolic and independent Fourier checks. Classical kernel and Harnack methods are credited. AI-assisted preprint with a detailed originating-system self-audit; no independent peer review, formal verification or exhaustive priority certification is claimed.
Record
- Affiliation
- Mercury Software GmbH
- Contact
- [email protected] · GitHub
- Result
- Complete counterexample
- Categories
- math.CV · math.CA
- Manuscript
- 26 October 2026
- Online release
- 26 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, “Martin Kernels without Green-Line Contact on an Annulus,” EulerSolve Research Papers, AMR-022-7042, 2026. https://doi.org/10.5281/zenodo.23653837.
BibTeX
@misc{ferudun2026martincontact,
author = {Ferudun, Alper},
title = {Martin Kernels without Green-Line Contact on an Annulus},
year = {2026},
howpublished = {EulerSolve Research Papers},
url = {https://eulersolve.org/papers/amr-022-7042/},
doi = {10.5281/zenodo.23653837},
note = {AMR-022-7042; unrefereed preprint}
}