English

Conic-line arrangements in the complex projective plane

Algebraic Geometry 2022-04-13 v3 Combinatorics

Abstract

The main goal of this note is to begin a systematic study on conic-line arrangements in the complex projective plane. We show a de Bruijn-Erd\H{o}s-type inequality and Hirzebruch-type inequality for a certain class of conic-line arrangements having ordinary singularities. We will also study, in detail, certain conic-line arrangements in the context of the geography of log-surfaces and free divisors in the sense of Saito.

Keywords

Cite

@article{arxiv.2002.01760,
  title  = {Conic-line arrangements in the complex projective plane},
  author = {Piotr Pokora and Tomasz Szemberg},
  journal= {arXiv preprint arXiv:2002.01760},
  year   = {2022}
}

Comments

17 pages, 2 figures. Version 3.0, this is the version incorporating referee's remarks

R2 v1 2026-06-23T13:31:51.240Z