On the proportion of locally soluble superelliptic curves

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Hauptverfasser: Beneish, Lea, Keyes, Christopher
Format: Preprint
Veröffentlicht: 2021
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author Beneish, Lea
Keyes, Christopher
author_facet Beneish, Lea
Keyes, Christopher
contents We investigate the proportion of superelliptic curves that have a $\mathbb{Q}_p$ point for every place $p$ of $\mathbb{Q}$. We show that this proportion is positive and given by the product of local densities, we provide lower bounds for this proportion in general, and for superelliptic curves of the form $y^3 = f(x,z)$ for an integral binary form $f$ of degree 6, we determine this proportion to be 96.94%. More precisely, we give explicit rational functions in $p$ for the proportion of such curves over $\mathbb{Z}_p$ having a $\mathbb{Q}_p$-point.
format Preprint
id arxiv_https___arxiv_org_abs_2111_04697
institution arXiv
publishDate 2021
record_format arxiv
spellingShingle On the proportion of locally soluble superelliptic curves
Beneish, Lea
Keyes, Christopher
Number Theory
11G20, 11G30
We investigate the proportion of superelliptic curves that have a $\mathbb{Q}_p$ point for every place $p$ of $\mathbb{Q}$. We show that this proportion is positive and given by the product of local densities, we provide lower bounds for this proportion in general, and for superelliptic curves of the form $y^3 = f(x,z)$ for an integral binary form $f$ of degree 6, we determine this proportion to be 96.94%. More precisely, we give explicit rational functions in $p$ for the proportion of such curves over $\mathbb{Z}_p$ having a $\mathbb{Q}_p$-point.
title On the proportion of locally soluble superelliptic curves
topic Number Theory
11G20, 11G30
url https://arxiv.org/abs/2111.04697