The Brauer-Kuroda formula for higher S-class numbers in dihedral extensions of number fields
Let be a finite extension of and be the set of the extensions of degree over whose normal closure is a -extension. For a fixed discriminant, we show how many extensions there are in with such discriminant, and we give the discriminant and the Galois group (together with its filtration of the ramification groups) of their normal closure. We show how this method can be generalized to get a classification of the extensions in .
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