Module

ActualTameCoordinateEquivariance.lean

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

Equivariance at every actual tame degree

The already proved stage-independent evaluation theorem transfers finite quotient scalar equivariance to the SAME coordinate of the original theta.

Declarations

EtaleFundamentalGroups.Inertia.actualTameCoordinate_conjugate_scalar
Source context 3 commands

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

namespace EtaleFundamentalGroups.Inertia
open SchemeTheory
universe u v w
theorem actualTameCoordinate_conjugate_scalar
    (A : Type u) (K : Type v) (L : Type w)
    [CommRing A] [IsDomain A] [IsDiscreteValuationRing A]
    [Field K] [Field L] [Algebra A K] [IsFractionRing A K]
    [Algebra K L] [Algebra A L] [IsScalarTower A K L] [IsGalois K L]
    (Q : Ideal (normalizationCommAlgCat A L).carrier) [Q.IsMaximal]
    (n : Subtype (actualFiniteTameDegreeSet A K L Q))
    (d : (normalizationDecompositionGroup A K L Q).carrier)
    (σ : (actualNormalizationInertiaGroup A K L Q).carrier) :
    ((actualTameCoordinate A K L Q n).toFun
        (originalFiniteNormalizationInertiaConjugate A K L Q d σ)).val.val =
      ((actualNormalizationQuotientAction A K L Q).toFun d).toFun
        ((actualTameCoordinate A K L Q n).toFun σ).val.val