English

Homogeneous Liaison and the Sequentially Bounded Licci Property

Commutative Algebra 2019-08-05 v1

Abstract

In CI-Liaison, significant effort has been made to study ideals that are in the linkage class of a complete intersection, which are called licci ideals. In a polynomial ring, recently E. Chong defined a "sequentially bounded" condition on the degrees of the forms generating the regular sequences, and used this condition to find a large class of licci ideals satisfying the Eisenbud-Green-Harris Conjecture (among them, grade 33 homogeneous Gorenstein ideals). He raised the question of whether all homogeneous licci ideals are sequentially bounded licci. In this paper we construct a class of examples that are homogeneously licci, but not sequentially bounded licci, thus answering his question in the negative. The structure of certain Betti tables plays a central role in our proof.

Keywords

Cite

@article{arxiv.1908.00676,
  title  = {Homogeneous Liaison and the Sequentially Bounded Licci Property},
  author = {Jesse Keyton},
  journal= {arXiv preprint arXiv:1908.00676},
  year   = {2019}
}

Comments

33 pages

R2 v1 2026-06-23T10:37:52.206Z