One Compact Amoeba Intersection, Several Mixed Cells
Manuscript 27 October 2026 · Online 27 October 2026
Abstract
We give explicit obstructions to assigning one binomial system to a connected compact intersection of amoebas. For f=w-1 and g=(z-10)(z-12)(z+11)(z+13)-525w, the entire amoeba intersection is a single compact interval with four distinct real torus solutions. The canonical Ronkin spines have four transverse intersections, each dual to a fully mixed cell of volume one, while the normalized mixed Monge-Ampere mass is four. Every binomial system from any single fully mixed cell for these Newton polytopes has at most two real solutions, even after coarsening. Thus the single-binomial real-preserving correspondence in AIM A.2 (UnsolvedMath v1.6.0, AIM-GEOMETRY-0322) is false. For every d>=2, a related construction gives one compact component of mass d with d unit canonical-spine cells. The volume comparison fixes the canonical Ronkin-spine convention: arbitrary coarsenings may match complex mass. We do not claim a whole-record closure of the source's unspecified volume formulation. The first Newton polytope is a segment; unions of start systems, full-dimensional-support modifications and valid patchworking/lifting theorems are excluded. Classical local mass, spine facts and known real-homotopy limitations are credited. This six-page English preprint includes 1,104 exact standard-library checks supporting the written analytic proofs. Developed with AI assistance and self-audited, it is unrefereed, without independent review, proof-assistant verification or absolute-priority certification.
Record
- Affiliation
- Mercury Software GmbH
- Contact
- [email protected] · GitHub
- Result
- Complete scoped counterexample
- Categories
- math.AG · math.CV
- 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, “One Compact Amoeba Intersection, Several Mixed Cells,” EulerSolve Research Papers, AIM-GEOMETRY-0322, 2026. https://doi.org/10.5281/zenodo.23699246.
BibTeX
@misc{ferudun2026amoebamixedcells,
author = {Ferudun, Alper},
title = {One Compact Amoeba Intersection, Several Mixed Cells},
year = {2026},
howpublished = {EulerSolve Research Papers},
url = {https://eulersolve.org/papers/aim-geometry-0322/},
doi = {10.5281/zenodo.23699246},
note = {AIM-GEOMETRY-0322; unrefereed preprint}
}