English

Counterexamples to the $I^{(3)} \subset I^2$ containment

Algebraic Geometry 2015-04-22 v3 Commutative Algebra

Abstract

We show that in general the third symbolic power of a radical ideal of points in the complex projective plane is not contained in the second usual power of that ideal. This answers in negative a question asked by Huneke and generalized by Harbourne.

Cite

@article{arxiv.1301.7440,
  title  = {Counterexamples to the $I^{(3)} \subset I^2$ containment},
  author = {Marcin Dumnicki and Tomasz Szemberg and Halszka Tutaj-Gasinska},
  journal= {arXiv preprint arXiv:1301.7440},
  year   = {2015}
}

Comments

Change of the title matches the printed version

R2 v1 2026-06-21T23:18:13.308Z