Flag vectors of Eulerian partially ordered sets
Combinatorics
2007-05-23 v1
Abstract
The closed cone of flag vectors of Eulerian partially ordered sets is studied. It is completely determined up through rank seven. Half-Eulerian posets are defined. Certain limit posets of Billera and Hetyei are half-Eulerian; they give rise to extreme rays of the cone for Eulerian posets. A new family of linear inequalities valid for flag vectors of Eulerian posets is given.
Cite
@article{arxiv.math/9907144,
title = {Flag vectors of Eulerian partially ordered sets},
author = {Margaret M. Bayer and Gabor Hetyei},
journal= {arXiv preprint arXiv:math/9907144},
year = {2007}
}
Comments
31 pages, LaTeX