The class number one problem for the dihedral and dicyclic CM-fields
Volume 80 / 1999
Colloquium Mathematicum 80 (1999), 259-265
DOI: 10.4064/cm-80-2-259-265
Abstract
We recall the determination of all the dihedral CM-fields with relative class number one, and prove that dicyclic CM-fields have relative class numbers greater than one.
