Module

GenericCohomologyInjection.lean

Nyll.AnabelianGeometry.WeightFiltration.GenericCohomologyInjection
1 declaration indexed from sourceView source ↗

Injectivity of actual finite H¹ restriction to the function field

Declarations

AnabelianGeometry.WeightFiltration.finiteH1Pullback_genericPoint_injective

On a normal integral scheme, the actual generic-point pullback on finite constant-coefficient H¹ is injective.

Source context 4 commands

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

noncomputable section
open AlgebraicGeometry CategoryTheory CategoryTheory.PreGaloisCategory
open EtaleFundamentalGroups.Cohomology JacobianVarieties.Kummer
namespace AnabelianGeometry.WeightFiltration
theorem finiteH1Pullback_genericPoint_injective
    (X : Scheme) [IsIntegral X] [IsNormalIntegral X]
    (Ω : Type) [Field Ω] [Algebra X.functionField Ω]
    [IsSepClosed Ω] [IsSepClosure X.functionField Ω]
    (A : AddCommGrpCat.{0}) [Finite A] :
    Function.Injective (constantCohomologyPullback
      (X.fromSpecStalk (genericPoint X)) A 1)