∀ {X S : AlgebraicGeometry.Scheme} (f : X ⟶ S) [inst : AlgebraicGeometry.QuasiCompact f]
  [inst_1 : AlgebraicGeometry.QuasiSeparated f],
  CategoryTheory.CategoryStruct.comp f (CategoryTheory.CategoryStruct.id S) =
    CategoryTheory.CategoryStruct.comp (AlgebraicGeometry.Scheme.Hom.toNormalization f)
      (AlgebraicGeometry.Scheme.Hom.fromNormalization f)