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Generic projections of the $\mathrm{H}_{4}$ configuration of points

Algebraic Geometry 2022-09-01 v3

Abstract

In the present note we give an example of a finite set of points in P3\mathbb{P}^{3} which has the so-called geproci property, but it is neither a grid nor a half-grid. This answers a question on the existence of such sets rised by Pokora, Szemberg and Szpond [arXiv:2010.08863].

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Cite

@article{arxiv.2107.08107,
  title  = {Generic projections of the $\mathrm{H}_{4}$ configuration of points},
  author = {Paulina Wiśniewska and Maciej Zięba},
  journal= {arXiv preprint arXiv:2107.08107},
  year   = {2022}
}

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7 pages