Module

NarrowRayClassModulus.lean

Nyll.ClassFieldTheory.Definitions.ConductorsAndRayClassFields.NarrowRayClassModulus
1 declaration indexed from sourceView source ↗

The narrow class-group modulus

Declarations

ClassFieldTheory.narrowRayClassModulus

The modulus with no finite exponent and positivity at every real place. Its ray class group is the narrow ideal class group.

Source context 4 commands

Surrounding namespaces, section variables, and local commands at this declaration.

noncomputable section
namespace ClassFieldTheory
universe u
open scoped Classical in
def narrowRayClassModulus
    (K : Type u) [Field K] [NumberField K] : RayClassModulus K where
  finitePart := 0
  infinitePart := Finset.univ