$\mathbb Z/2$-Godeaux surfaces

Fuente: arXiv
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Autores principales: Dias, Eduardo, Rito, Carlos
Formato: Preprint
Publicado: 2020
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author Dias, Eduardo
Rito, Carlos
author_facet Dias, Eduardo
Rito, Carlos
contents We prove that the moduli space of numerical Godeaux surfaces with torsion group $\mathbb{Z}/2$ is irreducible and unirational of dimension 8. Moreover, we show that the topological fundamental group of these surfaces is also $\mathbb{Z}/2$. Our approach is based on the explicit construction of equations for all universal covers of numerical Godeaux surfaces with torsion group $\mathbb{Z}/2$.
format Preprint
id arxiv_https___arxiv_org_abs_2009_12645
institution arXiv
publishDate 2020
record_format arxiv
spellingShingle $\mathbb Z/2$-Godeaux surfaces
Dias, Eduardo
Rito, Carlos
Algebraic Geometry
14J29
We prove that the moduli space of numerical Godeaux surfaces with torsion group $\mathbb{Z}/2$ is irreducible and unirational of dimension 8. Moreover, we show that the topological fundamental group of these surfaces is also $\mathbb{Z}/2$. Our approach is based on the explicit construction of equations for all universal covers of numerical Godeaux surfaces with torsion group $\mathbb{Z}/2$.
title $\mathbb Z/2$-Godeaux surfaces
topic Algebraic Geometry
14J29
url https://arxiv.org/abs/2009.12645