English

Combinatorial Reductions for the Stanley Depth of $I$ and $S/I$

Commutative Algebra 2017-08-29 v3 Combinatorics

Abstract

We develop combinatorial tools to study the relationship between the Stanley depth of a monomial ideal II and the Stanley depth of its compliment, S/IS/I. Using these results we are able to prove that if SS is a polynomial ring with at most 5 indeterminates and II is a square-free monomial ideal, then the Stanley depth of S/IS/I is strictly larger than the Stanley depth of II. Using a computer search, we are able to extend this strict inequality up to polynomial rings with at most 7 indeterminates. This partially answers questions asked by Propescu and Qureshi as well as Herzog.

Keywords

Cite

@article{arxiv.1702.00781,
  title  = {Combinatorial Reductions for the Stanley Depth of $I$ and $S/I$},
  author = {Mitchel T. Keller and Stephen J. Young},
  journal= {arXiv preprint arXiv:1702.00781},
  year   = {2017}
}

Comments

15 pages, 3 figures, 3 tables