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Virtual Complete Intersections in $\mathbb{P}^1 \times \mathbb{P}^1$

Algebraic Geometry 2020-06-16 v2 Commutative Algebra

Abstract

The minimal free resolution of the coordinate ring of a complete intersection in projective space is a Koszul complex on a regular sequence. In the product of projective spaces P1×P1\mathbb{P}^1 \times \mathbb{P}^1, we investigate which sets of points have a virtual resolution that is a Koszul complex on a regular sequence. This paper provides conditions on sets of points; some of which guarantee the points have this property, and some of which guarantee the points do not have this property.

Keywords

Cite

@article{arxiv.1905.09991,
  title  = {Virtual Complete Intersections in $\mathbb{P}^1 \times \mathbb{P}^1$},
  author = {Jiyang Gao and Yutong Li and Michael C. Loper and Amal Mattoo},
  journal= {arXiv preprint arXiv:1905.09991},
  year   = {2020}
}

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Minor revisions

R2 v1 2026-06-23T09:21:17.669Z