Unconditional class-group certification for two totally real octic \(D_4\)-fields

This package provides a reproducible, computer-assisted, GRH-independentcertification that two explicit totally real octic fields with Galois group\\(D_4\\) have class group \\(\\mathbf Z/8\\mathbf Z\\oplus\\mathbf Z/4\\mathbf Z\\).It combines a one-sided PARI/GP class-group certificate, a \\(D_4\\)Brauer--Kuroda relation, fully certified proper subfields, explicit units, andrigorous Sturm--Arb regulator intervals.

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-09-16
DOI
https://doi.org/10.5281/zenodo.22789743
Primary Topic
Algebraic Geometry and Number Theory
Type
article
Field-Weighted Citation Impact
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Unconditional class-group certification for two totally real octic \(D_4\)-fields

Kenshirou Moriwaki
Zenodo (CERN European Organization for Nuclear Research)
Algebraic Geometry and Number Theory
article

Unconditional class-group certification for two totally real octic \(D_4\)-fields

Kenshirou Moriwaki
article en

Abstract

This package provides a reproducible, computer-assisted, GRH-independentcertification that two explicit totally real octic fields with Galois group\(D_4\) have class group \(\mathbf Z/8\mathbf Z\oplus\mathbf Z/4\mathbf Z\).It combines a one-sided PARI/GP class-group certificate, a \(D_4\)Brauer--Kuroda relation, fully certified proper subfields, explicit units, andrigorous Sturm--Arb regulator intervals.

Zenodo (CERN European Organization for Nuclear Research)
Hokkaido Research Organization (JP)
Openalex Percentile: Top 5%
Algebraic Geometry and Number Theory
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