Kida's formula via Selmer complexes

Fuente: arXiv
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Auteur principal: Kataoka, Takenori
Format: Preprint
Publié: 2024
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author Kataoka, Takenori
author_facet Kataoka, Takenori
contents In Iwasawa theory, the $λ$, $μ$-invariants of various arithmetic modules are fundamental invariants that measure the size of the modules. Concerning the minus components of the unramified Iwasawa modules, Kida proved a formula that describes the behavior of those invariants with respect to field extensions. Subsequently, many analogues of Kida's formula have been found in various areas in Iwasawa theory. In this paper, we present a novel approach to such analogues of Kida's formula, based on the perspective of Selmer complexes.
format Preprint
id arxiv_https___arxiv_org_abs_2401_07036
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Kida's formula via Selmer complexes
Kataoka, Takenori
Number Theory
11R23
In Iwasawa theory, the $λ$, $μ$-invariants of various arithmetic modules are fundamental invariants that measure the size of the modules. Concerning the minus components of the unramified Iwasawa modules, Kida proved a formula that describes the behavior of those invariants with respect to field extensions. Subsequently, many analogues of Kida's formula have been found in various areas in Iwasawa theory. In this paper, we present a novel approach to such analogues of Kida's formula, based on the perspective of Selmer complexes.
title Kida's formula via Selmer complexes
topic Number Theory
11R23
url https://arxiv.org/abs/2401.07036