On $\mathscr{M}$-arrangements of conics and lines with ordinary singularities

Fuente: arXiv
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Main Authors: Janasz, Marek, Pokora, Piotr
Format: Preprint
Published: 2025
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author Janasz, Marek
Pokora, Piotr
author_facet Janasz, Marek
Pokora, Piotr
contents In this paper, we study combinatorial aspects of reduced plane curves known as $\mathscr{M}$-curves. This notation is a natural generalization of maximizing plane curves which are well-known in the theory of algebraic surfaces. We focus here on $\mathscr{M}$-arrangements of conics and lines with ordinary singularities of multiplicity less than five and we provide various numerical constraints on their existence, particularly in terms of their weak combinatorics. Moreover, we study in detail the scenario when our $\mathscr{M}$-arrangements consist of lines and just one conic.
format Preprint
id arxiv_https___arxiv_org_abs_2512_24707
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On $\mathscr{M}$-arrangements of conics and lines with ordinary singularities
Janasz, Marek
Pokora, Piotr
Algebraic Geometry
Combinatorics
14H50, 32S25, 14C20
In this paper, we study combinatorial aspects of reduced plane curves known as $\mathscr{M}$-curves. This notation is a natural generalization of maximizing plane curves which are well-known in the theory of algebraic surfaces. We focus here on $\mathscr{M}$-arrangements of conics and lines with ordinary singularities of multiplicity less than five and we provide various numerical constraints on their existence, particularly in terms of their weak combinatorics. Moreover, we study in detail the scenario when our $\mathscr{M}$-arrangements consist of lines and just one conic.
title On $\mathscr{M}$-arrangements of conics and lines with ordinary singularities
topic Algebraic Geometry
Combinatorics
14H50, 32S25, 14C20
url https://arxiv.org/abs/2512.24707