Article ID Journal Published Year Pages File Type
4655894 Journal of Combinatorial Theory, Series A 2010 15 Pages PDF
Abstract

In this paper, we study flag structures of matroid base polytopes. We describe faces of matroid base polytopes in terms of matroid data, and give conditions for hyperplane splits of matroid base polytopes. Also, we show how the cd-index of a polytope can be expressed when a polytope is split by a hyperplane, and apply these to the cd-index of a matroid base polytope of a rank 2 matroid.

Related Topics
Physical Sciences and Engineering Mathematics Discrete Mathematics and Combinatorics