Coarse types of tropical matroid polytopes

Details Coarse types of tropical matroid polytopes Coarse types of tropical matroid polytopes

2010-12-14

arxiv.org/abs/1012.3053v2

Mathematics

Combinatorics

13 pages, 7 figures

Scientific paper

Describing the combinatorial structure of the tropical complex $C$ of a tropical matroid polytope, we obtain a formula for the coarse types of the maximal cells of $C$. Due to the connection between tropical complexes and resolutions of monomial ideals, this yields the generators for the corresponding coarse type ideal introduced in a recent paper of Dochtermann, Joswig and Sanyal (2010, preprint arXiv.org:1001.0237). Furthermore, a complete description of the minimal tropical halfspaces of the uniform tropical matroid polytopes, i.e. the tropical hypersimplices, is given.

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