2 papers
math.CO2025
Oriented Matroid Circuit Polytopes
Laura Escobar, Jodi McWhirter
Matroids give rise to several natural constructions of polytopes. Inspired by this, we examine polytopes that arise from the signed circuits of an oriented matroid. We give the dim…
math.CO2020
The Arithmetic of Coxeter Permutahedra
Federico Ardila, Matthias Beck, Jodi McWhirter
Ehrhart theory measures a polytope P discretely by counting the lattice points inside its dilates P, 2P, 3P, .... We compute the Ehrhart quasipolynomials of the standard Coxeter pe…