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Bibliographic Details
Main Authors: Greither, Cornelius, Kataoka, Takenori
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2508.15242
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Table of Contents:
  • In previous papers, the Galois module structure of minus class groups was studied for abelian CM extensions. In this paper, we discuss some nonabelian cases, focusing on metacyclic extensions. For a certain class of these, we obtain a complete description of the Galois modules that occur as minus class groups, modulo a certain equivalence relation on modules, which was introduced earlier by the same authors.