English
The inclusion of ideal sheaf data induces a morphism of schemes when I ≤ J.
Русский
Включение данных идеала шейфа индуцирует морфизм подсхем при I ≤ J.
LaTeX
$$$\text{inclusion}: I \le J \Rightarrow J.subscheme \to I.subscheme$$$
Lean4
/-- The inclusion of ideal sheaf induces an inclusion of subschemes -/
noncomputable def inclusion {I J : IdealSheafData X} (h : I ≤ J) : J.subscheme ⟶ I.subscheme :=
J.subschemeCover.openCover.glueMorphisms (fun U ↦ glueDataObjHom h U ≫ I.subschemeCover.f U)
(by
intro U V
simp only [← cancel_mono I.subschemeι, AffineOpenCover.openCover_X, glueDataObjHom_ι_assoc,
AffineOpenCover.openCover_f, Category.assoc, subschemeCover_map_subschemeι]
rw [← subschemeCover_map_subschemeι, pullback.condition_assoc, subschemeCover_map_subschemeι])