English

The edge ideals of complete multipartite hypergraphs

Combinatorics 2014-02-14 v1 Commutative Algebra

Abstract

We classify all complete uniform multipartite hypergraphs with respect to some algebraic properties, such as being (almost) complete intersection, Gorenstein, level, ll-Cohen-Macaulay, ll-Buchsbaum, unmixed, and satisfying Serre's condition SrS_r, via some combinatorial terms. Also, we prove that for a complete ss-uniform tt-partite hypergraph HH, vertex decomposability, shellability, sequentially SrS_r and sequentially Cohen-Macaulay properties coincide with the condition that HH has t1t-1 sides consisting of a single vertex. Moreover, we show that the latter condition occurs if and only if it is a chordal hypergraph.

Keywords

Cite

@article{arxiv.1402.2469,
  title  = {The edge ideals of complete multipartite hypergraphs},
  author = {Dariush Kiani and Sara Saeedi Madani},
  journal= {arXiv preprint arXiv:1402.2469},
  year   = {2014}
}

Comments

11 pages, To appear in Communications in Algebra

R2 v1 2026-06-22T03:05:36.139Z