English

Minuscule Coxeter Dressians

Combinatorics 2025-12-11 v1 Algebraic Geometry Representation Theory

Abstract

In this extended abstract, we study special tropical prevarieties which we call Coxeter Dressians. They arise from equations capturing a generalization of valuated symmetric basis exchange for Coxeter matroids. In particular, we study subdivisions of the associated Coxeter matroid polytopes. We show that the subdivisions induced by points of the Coxeter Dressian consist of cells which are strong Coxeter matroidal. This generalizes well-known results in type AA to other Lie types. Finally, we implement explicit computations of Coxeter Dressians in OSCAR.

Keywords

Cite

@article{arxiv.2512.09703,
  title  = {Minuscule Coxeter Dressians},
  author = {Andreas Gross and Kevin Kuehn and Dante Luber},
  journal= {arXiv preprint arXiv:2512.09703},
  year   = {2025}
}

Comments

extended abstract of 9 pages, 1 figure, comments welcome!

R2 v1 2026-07-01T08:18:56.079Z