Panyushev, Dmitri I. Max Planck Institute for Mathematics, Max Planck Society;
panyushev_two covering_oa_2012.pdf (Any fulltext), 273KB
Panyushev, D. I. (2012). Two covering polynomials of a finite poset, with applications to root systems and ad-nilpotent ideals. Journal of Combinatorics, 3(1), 63-89. Retrieved from http://arxiv.org/pdf/math/0502386.pdf.