Subdivisions of root polytopes, generalized tropical oriented matroids, and generalized matching ensembles

Abstract

We study a generalization of tropical oriented matroids by Ardila and Develin, and show that they are in bijection with subdivisions of root polytopes, which are sub-polytopes of a product of two simplices. We also study a generalization of a matching-based combinatorial model by Oh and Yoo in the special case of triangulations.

arXiv comment20 pages, 7 figures. This is the full version of V1