English

Geproci sets on skew lines in $\mathbb P^3$ with two transversals

Algebraic Geometry 2023-12-11 v1 Combinatorics

Abstract

The purpose of this work is to pursue classification of geproci sets. Specifically we classify [m,n][m,n]-geproci sets which consist of m=4m=4 points on each of nn skew lines, assuming the skew lines have two transversals in common. We show that in this case n6n\leq 6. Moreover we show that all geproci sets of this type are contained in the \emph{standard construction} for m=4m=4 introduced in arXiv:2209.04820. Finally, we propose a conjectural representation for all geproci sets of this type, irrespective of the number mm of points on each skew line.

Keywords

Cite

@article{arxiv.2312.04644,
  title  = {Geproci sets on skew lines in $\mathbb P^3$ with two transversals},
  author = {Luca Chiantini and Pietro De Poi and Lucja Farnik and Giuseppe Favacchio and Brian Harbourne and Giovanna Ilardi and Juan Migliore and Tomasz Szemberg and Justyna Szpond},
  journal= {arXiv preprint arXiv:2312.04644},
  year   = {2023}
}

Comments

12 pages, 1 figura

R2 v1 2026-06-28T13:44:28.530Z