English

Quadrics defined by skew-symmetric matrices

Commutative Algebra 2018-06-13 v1

Abstract

In this paper we propose a model for computing a minimal free resolution for ideals of the form I1(XnYn)I_{1}(X_{n}Y_{n}), where XnX_{n} is an n×nn\times n skew-symmetric matrix with indeterminate entries xijx_{ij} and YnY_{n} is a generic column matrix with indeterminate entries yjy_{j}. We verify that the model works for n=3n=3 and n=4n=4 and pose some statements as conjectures. Answering the conjectures in affirmative would enable us to compute a minimal free resolution for general nn.

Keywords

Cite

@article{arxiv.1806.04446,
  title  = {Quadrics defined by skew-symmetric matrices},
  author = {Joydip Saha and Indranath Sengupta and Gaurab Tripathi},
  journal= {arXiv preprint arXiv:1806.04446},
  year   = {2018}
}
R2 v1 2026-06-23T02:27:06.221Z