∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] {X Y Z : AlgebraicGeometry.SheafedSpace C} (f : X ⟶ Y)
  (g : Y ⟶ Z),
  (CategoryTheory.CategoryStruct.comp f g).hom.base = CategoryTheory.CategoryStruct.comp f.hom.base g.hom.base