English

Regularity of symbolic powers and Arboricity of matroids

Commutative Algebra 2017-02-16 v1 Combinatorics

Abstract

Let Δ\Delta be a simplicial complex of a matroid MM. In this paper, we explicitly compute the regularity of all the symbolic powers of a Stanley-Reisner ideal IΔI_\Delta in terms of combinatorial data of the matroid MM. In order to do that, we provide a sharp bound between the arboricity of MM and the circumference of its dual MM^*.

Keywords

Cite

@article{arxiv.1702.04491,
  title  = {Regularity of symbolic powers and Arboricity of matroids},
  author = {Nguyen Cong Minh and Tran Nam Trung},
  journal= {arXiv preprint arXiv:1702.04491},
  year   = {2017}
}