Module

OModulePresheaf_isQuasicoherent_ker.lean

Nyll.AlgebraicCurves.Cohomology.Sheaves.OModulePresheaf_isQuasicoherent_ker
2 declarations indexed from sourceView source ↗

OModule Presheaf is Quasicoherent ker

Declarations

AlgebraicCurves.Cohomology.Sheaves.Proofs.OModulePresheaf_isQuasicoherent_ker.AlgebraicGeometry.OModulePresheaf.G4T.isQuasicoherent_ker
Source context 18 commands

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

section ProofImplementation
namespace AlgebraicCurves.Cohomology.Sheaves.Proofs.OModulePresheaf_isQuasicoherent_ker
open _root_.AlgebraicGeometry
open _root_.CategoryTheory
open _root_.TopologicalSpace
open _root_.Opposite
noncomputable section
namespace AlgebraicGeometry
open _root_.AlgebraicGeometry
namespace OModulePresheaf
open _root_.AlgebraicGeometry.OModulePresheaf
namespace G4T
open _root_.AlgebraicGeometry.OModulePresheaf
open _root_.AlgebraicGeometry
universe u
section PModQC
variable {R : Type u} [CommRing R] {V : Scheme.{u}} {π : V ⟶ Spec (.of R)}
variable {F G : OModulePresheaf π} (φ : OModulePresheaf.Hom F G)
theorem isQuasicoherent_ker (hF : OModulePresheaf.IsQuasicoherent F)
    (hG : OModulePresheaf.IsQuasicoherent G) :
    OModulePresheaf.IsQuasicoherent (OModulePresheaf.ker φ)
AlgebraicGeometry.OModulePresheaf.isQuasicoherent_ker
Source context 8 commands

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

section ProofImplementation
namespace AlgebraicCurves.Cohomology.Sheaves.Proofs.OModulePresheaf_isQuasicoherent_ker
open _root_.AlgebraicGeometry
open _root_.CategoryTheory
open _root_.TopologicalSpace
open _root_.Opposite
universe u
open _root_.AlgebraicGeometry AlgebraicGeometry in
theorem _root_.AlgebraicGeometry.OModulePresheaf.isQuasicoherent_ker {R : Type u} [CommRing R] {V :
  Scheme.{u}} {π : V ⟶ Spec (.of R)} {F G : OModulePresheaf π} (φ : OModulePresheaf.Hom F G) (hF :
  F.IsQuasicoherent) (hG : G.IsQuasicoherent) : (OModulePresheaf.ker φ).IsQuasicoherent