Mazur's main conjecture at Eisenstein primes

Fuente: arXiv
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Autores principales: Castella, Francesc, Grossi, Giada, Skinner, Christopher
Formato: Preprint
Publicado: 2023
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author Castella, Francesc
Grossi, Giada
Skinner, Christopher
author_facet Castella, Francesc
Grossi, Giada
Skinner, Christopher
contents Let $E/\mathbb{Q}$ be an elliptic curve, let $p>2$ be a prime of good reduction for $E$, and assume that $E$ admits a rational $p$-isogeny with kernel $\mathbb{F}_p(ϕ)$. In this paper we prove the cyclotomic Iwasawa main conjecture for $E$, as formulated by Mazur in 1972, when $ϕ\vert_{G_p}\neq 1,ω$, where $G_p$ is a decomposition group at $p$ and $ω$ is the Teichmüller character. Our proof is based on a study of the anticyclotomic Iwasawa theory of $E$ over an imaginary quadratic field $K$ in which $p$ splits, and a congruence argument exploiting the cyclotomic Euler system of Beilinson--Flach classes.
format Preprint
id arxiv_https___arxiv_org_abs_2303_04373
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Mazur's main conjecture at Eisenstein primes
Castella, Francesc
Grossi, Giada
Skinner, Christopher
Number Theory
Let $E/\mathbb{Q}$ be an elliptic curve, let $p>2$ be a prime of good reduction for $E$, and assume that $E$ admits a rational $p$-isogeny with kernel $\mathbb{F}_p(ϕ)$. In this paper we prove the cyclotomic Iwasawa main conjecture for $E$, as formulated by Mazur in 1972, when $ϕ\vert_{G_p}\neq 1,ω$, where $G_p$ is a decomposition group at $p$ and $ω$ is the Teichmüller character. Our proof is based on a study of the anticyclotomic Iwasawa theory of $E$ over an imaginary quadratic field $K$ in which $p$ splits, and a congruence argument exploiting the cyclotomic Euler system of Beilinson--Flach classes.
title Mazur's main conjecture at Eisenstein primes
topic Number Theory
url https://arxiv.org/abs/2303.04373