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Gorenstein points in $\mathbb{P}^3$ via Hadamard product of projective varieties

Algebraic Geometry 2022-04-05 v2

Abstract

We show how to construct a stick figure of lines in P3\mathbb{P}^3 using the Hadamard product of projective varieties. Then, applying the results of Migliore and Nagel, we use such stick figure to build a Gorenstein set of points with given hh-vector h{\mathbf h}. Since the Hadamard product is a coordinate-wise product, we show, at the end, how the coordinates of the points, in the Gorenstein set, can be directly determined.

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Cite

@article{arxiv.2109.10328,
  title  = {Gorenstein points in $\mathbb{P}^3$ via Hadamard product of projective varieties},
  author = {Cristiano Bocci and Chiara Capresi and Daniele Carrucoli},
  journal= {arXiv preprint arXiv:2109.10328},
  year   = {2022}
}

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17 pages