Conductor exponents for families of hyperelliptic curves

Fuente: arXiv
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Autori principali: Azon, Martin, Curcó-Iranzo, Mar, Khawaja, Maleeha, Maistret, Céline, Mocanu, Diana
Natura: Preprint
Pubblicazione: 2024
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author Azon, Martin
Curcó-Iranzo, Mar
Khawaja, Maleeha
Maistret, Céline
Mocanu, Diana
author_facet Azon, Martin
Curcó-Iranzo, Mar
Khawaja, Maleeha
Maistret, Céline
Mocanu, Diana
contents We compute the conductor exponents at odd places using the machinery of cluster pictures of curves for three infinite families of hyperelliptic curves. These are families of Frey hyperelliptic curves constructed by Kraus and Darmon in the study of the generalised Fermat equations of signatures $(r,r,p)$ and $(p,p,r)$, respectively. Here, $r$ is a fixed prime number and $p$ is a prime that is allowed to vary. In the context of the modular method, Billerey-Chen-Dieulefait-Freitas computed all conductor exponents for the signature $(r,r,p)$. We recover their computations at odd places, providing an alternative approach. In a similar setup, Chen-Koutsianas computed all conductor exponents for the signature $(p,p,5)$. We extend their work to the general case of signature $(p,p,r)$ at odd places. Our work can also be used to compute local arithmetic data for the curves in these families.
format Preprint
id arxiv_https___arxiv_org_abs_2410_21134
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Conductor exponents for families of hyperelliptic curves
Azon, Martin
Curcó-Iranzo, Mar
Khawaja, Maleeha
Maistret, Céline
Mocanu, Diana
Number Theory
11D41, 11G30, 11G20, 14Q05, 11F80, 14H20
We compute the conductor exponents at odd places using the machinery of cluster pictures of curves for three infinite families of hyperelliptic curves. These are families of Frey hyperelliptic curves constructed by Kraus and Darmon in the study of the generalised Fermat equations of signatures $(r,r,p)$ and $(p,p,r)$, respectively. Here, $r$ is a fixed prime number and $p$ is a prime that is allowed to vary. In the context of the modular method, Billerey-Chen-Dieulefait-Freitas computed all conductor exponents for the signature $(r,r,p)$. We recover their computations at odd places, providing an alternative approach. In a similar setup, Chen-Koutsianas computed all conductor exponents for the signature $(p,p,5)$. We extend their work to the general case of signature $(p,p,r)$ at odd places. Our work can also be used to compute local arithmetic data for the curves in these families.
title Conductor exponents for families of hyperelliptic curves
topic Number Theory
11D41, 11G30, 11G20, 14Q05, 11F80, 14H20
url https://arxiv.org/abs/2410.21134