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Automorphisms of quartic del Pezzo surfaces in characteristic zero

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arxiv 2308.07904 v1 pith:ZIT7KV3X submitted 2023-08-15 math.AG math.NT

classification math.AGmath.NT
keywords pezzoquarticautomorphismscharacteristicgroupsrationalsurfacesurfaces
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abstract

For each field $k$ of characteristic zero, we classify which groups act by automorphisms on a quartic del Pezzo surface over $k$. We also determine which groups act on $k$-rational, stably $k$-rational, or $k$-unirational quartic del Pezzo surfaces. For each group $G$ that is realized over $k$, we exhibit explicit equations for a quartic del Pezzo surface $X$ in $\mathbb{P}^4_k$ such that $G$ acts by automorphisms on $X$.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Representations of finite subgroups of Cremona groups

    math.AG 2025-07 conditional novelty 8.0 of 10

    The minimal dimension of a faithful linear representation of all finite subgroups of the two-dimensional Cremona group is 8 when the field contains a primitive cube root of unity, 6 otherwise, and infinite in positive...

  2. Birational Geometry of sextic del Pezzo surfaces

    math.AG 2025-07 accept novelty 7.0 of 10

    Degree 6 del Pezzo surfaces over perfect fields are classified biregularly and birationally, and are shown to be the only solid surfaces admitting infinite pliability, with explicit presentations for their birational ...

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