English

On the eigenpoints of cubic surfaces

Algebraic Geometry 2020-10-12 v2

Abstract

We show that the eigenschemes of 4×4×44 \times 4 \times 4 symmetric tensors are parametrized by a linear subvariety of the Grassmannian Gr(3,P14)\operatorname{Gr}(3,\mathbb{P}^{14}). We also study the decomposition of the eigenscheme into the subscheme associated to the zero eigenvalue and its residue. In particular, we categorize the possible degrees and dimensions.

Keywords

Cite

@article{arxiv.1909.06261,
  title  = {On the eigenpoints of cubic surfaces},
  author = {Türkü Özlüm Celik and Francesco Galuppi and Avinash Kulkarni and Miruna-Stefana Sorea},
  journal= {arXiv preprint arXiv:1909.06261},
  year   = {2020}
}

Comments

15 pages, 1 figure, to appear in Le Matematiche

R2 v1 2026-06-23T11:14:39.153Z