A congruence for the index of a unit of a real abelian number field

DOI10.4064/aa-46-1-57-72zbMath0601.12009OpenAlexW979181002MaRDI QIDQ3735807

Kenneth S. Williams, Kenneth Hardy

Publication date: 1985

Published in: Acta Arithmetica (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/205987

zbMATH Keywords

cyclotomic fieldquadratic fieldcyclotomic numbersfundamental unitresiduacityDirichlet's formulaDirichlet unitsindex of unit

Mathematics Subject Classification ID

Galois theory (11R32) Units and factorization (11R27) Cyclotomic extensions (11R18)

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