noncomputable def
prop44_affine_pushforward_cohom
{X Y : AlgebraicGeometry.Scheme}
(f : X ⟶ Y)
[AlgebraicGeometry.IsAffineHom f]
(F : X.Modules)
[SheafOfModules.IsQuasicoherent F]
[CategoryTheory.HasInjectiveResolutions X.Modules]
[CategoryTheory.HasInjectiveResolutions Y.Modules]
(n : ℕ)
:
Proposition 44: For an affine morphism f : X → Y and a quasicoherent sheaf F on X,
the pushforward preserves higher cohomology: Hⁿ(Y, f_* F) ≅ Hⁿ(X, F).