Irreducibility of the Exposed-Point Variety of a Discotope
Manuscript 27 October 2026 · Online 27 October 2026
Abstract
A discotope is a finite Minkowski sum of linear images of Euclidean unit balls. We prove that, when every summand has intrinsic dimension at least two, the complex Zariski closure E of its exposed points is irreducible, without a genericity assumption. The proof uses the real-analytic support-point map on the connected complement of finitely many subspaces of codimension at least two. Under an explicit generic maximal-rank condition on all summand spans, every boundary point expressible as a sum of summand-boundary points is a limit of exposed points; hence the purely nonlinear part S equals E and is irreducible. This proves Gesmundo-Meroni Conjecture 8.2 (The Geometry of Discotopes, 2022) and Conjecture 1 in Meroni's contribution to Oberwolfach Report 15/2023, exactly frozen UnsolvedMath record OWR-12697711-006. Segment summands are excluded, and S=E may fail for nongeneric representations. The entire complex critical locus, birationality, degree, zonoid recognition and the adjacent rank-one convexity question are not resolved here. This five-page English preprint credits the existing support-face description and standard analytic inputs. It was developed with AI assistance and self-audited; 255 exact regression checks supplement the written proof. It is unrefereed, without independent review, formal proof-assistant verification or an absolute-priority claim.
Record
- Affiliation
- Mercury Software GmbH
- Contact
- [email protected] · GitHub
- Result
- Complete proof
- Categories
- math.MG · math.AG
- 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, “Irreducibility of the Exposed-Point Variety of a Discotope,” EulerSolve Research Papers, OWR-12697711-006, 2026. https://doi.org/10.5281/zenodo.23689704.
BibTeX
@misc{ferudun2026discotopeirreducibility,
author = {Ferudun, Alper},
title = {Irreducibility of the Exposed-Point Variety of a Discotope},
year = {2026},
howpublished = {EulerSolve Research Papers},
url = {https://eulersolve.org/papers/owr-12697711-006/},
doi = {10.5281/zenodo.23689704},
note = {OWR-12697711-006; unrefereed preprint}
}