English

Local Equations for Hilbert Schemes of Points

Algebraic Geometry 2025-10-24 v2 Commutative Algebra

Abstract

We compute the completion of the local ring of the Hilbert scheme of degree n+1n+1 subschemes of An\mathbb{A}^n at the point corresponding to the ideal x1,,xn2\langle x_1,\ldots,x_n\rangle^2, and describe the completion of the universal family. For the purposes of comparison, we do this computation with both classical and DGLA methods. We use our explicit equations to produce high dimensional linear subspaces of the Hilbert scheme, and compare our equations with those coming from deformations of based algebras.

Keywords

Cite

@article{arxiv.2510.07066,
  title  = {Local Equations for Hilbert Schemes of Points},
  author = {Nathan Ilten and Francesco Meazzini and Andrea Petracci},
  journal= {arXiv preprint arXiv:2510.07066},
  year   = {2025}
}

Comments

19 pages; comments welcome. v2 minor revisions

R2 v1 2026-07-01T06:24:03.686Z