English

Projective dimension of Hypergraphs

Commutative Algebra 2021-03-02 v2 Combinatorics

Abstract

Given a square-free monomial ideal II, satisfying certain hypotheses, in a polynomial ring RR over a field K\mathbb{K}, we compute the projective dimension of II. Specifically, we focus on the cases where the 1-skeleton of an associated hypergraph is either a string or a cycle. We investigate the impact on the projective dimension when higher dimensional edges are removed. We prove that the higher dimensional edge either has no effect on the projective dimension or the projective dimension only goes up by one with the extra higher dimensional edge.

Keywords

Cite

@article{arxiv.1910.01053,
  title  = {Projective dimension of Hypergraphs},
  author = {Kuei-Nuan Lin and Sonja Mapes},
  journal= {arXiv preprint arXiv:1910.01053},
  year   = {2021}
}

Comments

24 pages, 6 figures. formerly part of arXiv:1804.05919. To appear in WICA proceedings volume

R2 v1 2026-06-23T11:32:56.088Z