Module

OriginalFiniteNormalizationResidueComparison.lean

Nyll.EtaleFundamentalGroups.Inertia.OriginalFiniteNormalizationResidueComparison
1 declaration indexed from sourceView source ↗

Residue comparison for decomposition restriction

Factors the original normalization residue morphism through decomposition restriction and the intrinsic native residue morphism.

Declarations

EtaleFundamentalGroups.Inertia.originalFiniteNormalizationDecompositionMorphism_residue

The same original residue morphism factors through the actual normalization decomposition restriction and the intrinsic native residue morphism.

Source context 4 commands

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

noncomputable section
namespace EtaleFundamentalGroups.Inertia
open SchemeTheory
universe u v w
theorem originalFiniteNormalizationDecompositionMorphism_residue
    (A : Type u) (K : Type v) (F : Type w)
    [CommRing A] [Field K] [Field F]
    [Algebra A K] [IsFractionRing A K]
    [Algebra K F] [Algebra A F] [IsScalarTower A K F] [IsGalois K F]
    (Q : Ideal (normalizationCommAlgCat A F))
    (d : normalizationDecompositionGroup A K F Q) :
    (normalizationResidueMorphism A K F Q).hom'.toFun d =
      (commAlgStabilizerResidueMorphism A (normalizationCommAlgCat A F) Q).hom'.toFun
        ((originalFiniteNormalizationDecompositionMorphism A K F Q).hom'.toFun d)