Imaginary quadratic fields with isomorphic abelian Galois groups
Langue
en
Communication dans un congrès
Ce document a été publié dans
ANTS X - Tenth Algorithmic Number Theory Symposium, 2012-07-09, San Diego. 2013-11-14, vol. 1, p. 21-39
Mathematical Sciences Publisher
Résumé en anglais
In 1976, Onabe discovered that, in contrast to the Neukirch-Uchida results that were proved around the same time, a number field $K$ is not completely characterized by its absolute abelian Galois group $A_K$. The first ...Lire la suite >
Mots clés en anglais
absolute Galois group
class field theory
group extensions