The $f$--vector of the clique complex of chordal graphs and Betti numbers of edge ideals of uniform hypergraphs

Abstract

We describe the Betti numbers of the edge ideals $I(G)$ of uniform hypergraphs $G$ such that $I(G)$ has linear graded free resolution. We give an algebraic equation system and some inequalities for the components of the $f$--vector of the clique complex of an arbitrary chordal graph. Finally we present an explicit formula for the multiplicity of the Stanley-Reisner ring of the edge ideals of any chordal graph.

arXiv comment17 pages, substitutes Betti numbers of edge ideals of uniform hypergraphs

References in corpus (2)

• Betti Numbers of Graph Ideals
• Bounds for Betti numbers