Theorem: CategoryTheory.Localization.induction_structuredArrow
File: Mathlib/CategoryTheory/Localization/StructuredArrow.lean

Proof steps:
state_before: C : Type u_1
D : Type u_2
D' : Type u_3
inst✝³ : Category.{u_4, u_1} C
inst✝² : Category.{u_5, u_2} D
inst✝¹ : Category.{?u.12961, u_3} D'
L : C ⥤ D
W : MorphismProperty C
inst✝ : L.IsLocalization W
X : C
P : StructuredArrow (L.obj X) L → Prop
hP₀ : P (StructuredArrow.mk (𝟙 (L.obj X)))
hP₁ :
  ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : L.obj X ⟶ L.obj Y₁), P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ L.map f))
hP₂ :
  ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : L.obj X ⟶ L.obj Y₂),
    P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ (isoOfHom L W w hw).inv))
g : StructuredArrow (L.obj X) L
⊢ P g
state_after: C : Type u_1
D : Type u_2
D' : Type u_3
inst✝³ : Category.{u_4, u_1} C
inst✝² : Category.{u_5, u_2} D
inst✝¹ : Category.{?u.12961, u_3} D'
L : C ⥤ D
W : MorphismProperty C
inst✝ : L.IsLocalization W
X : C
P : StructuredArrow (L.obj X) L → Prop
hP₀ : P (StructuredArrow.mk (𝟙 (L.obj X)))
hP₁ :
  ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : L.obj X ⟶ L.obj Y₁), P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ L.map f))
hP₂ :
  ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : L.obj X ⟶ L.obj Y₂),
    P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ (isoOfHom L W w hw).inv))
g : StructuredArrow (L.obj X) L
P' : StructuredArrow (W.Q.obj X) W.Q → Prop := fun g => P ((structuredArrowEquiv W W.Q L) g)
⊢ P g
tactic: let P' : StructuredArrow (W.Q.obj X) W.Q → Prop :=
    fun g ↦ P (structuredArrowEquiv W W.Q L g)
state_before: C : Type u_1
D : Type u_2
D' : Type u_3
inst✝³ : Category.{u_4, u_1} C
inst✝² : Category.{u_5, u_2} D
inst✝¹ : Category.{?u.12961, u_3} D'
L : C ⥤ D
W : MorphismProperty C
inst✝ : L.IsLocalization W
X : C
P : StructuredArrow (L.obj X) L → Prop
hP₀ : P (StructuredArrow.mk (𝟙 (L.obj X)))
hP₁ :
  ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : L.obj X ⟶ L.obj Y₁), P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ L.map f))
hP₂ :
  ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : L.obj X ⟶ L.obj Y₂),
    P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ (isoOfHom L W w hw).inv))
g : StructuredArrow (L.obj X) L
P' : StructuredArrow (W.Q.obj X) W.Q → Prop := fun g => P ((structuredArrowEquiv W W.Q L) g)
⊢ P g
state_after: C : Type u_1
D : Type u_2
D' : Type u_3
inst✝³ : Category.{u_4, u_1} C
inst✝² : Category.{u_5, u_2} D
inst✝¹ : Category.{?u.12961, u_3} D'
L : C ⥤ D
W : MorphismProperty C
inst✝ : L.IsLocalization W
X : C
P : StructuredArrow (L.obj X) L → Prop
hP₀ : P (StructuredArrow.mk (𝟙 (L.obj X)))
hP₁ :
  ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : L.obj X ⟶ L.obj Y₁), P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ L.map f))
hP₂ :
  ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : L.obj X ⟶ L.obj Y₂),
    P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ (isoOfHom L W w hw).inv))
g : StructuredArrow (L.obj X) L
P' : StructuredArrow (W.Q.obj X) W.Q → Prop := fun g => P ((structuredArrowEquiv W W.Q L) g)
⊢ P ((structuredArrowEquiv W W.Q L) ((structuredArrowEquiv W W.Q L).symm g))
tactic: rw [← (structuredArrowEquiv W W.Q L).apply_symm_apply g]
state_before: C : Type u_1
D : Type u_2
D' : Type u_3
inst✝³ : Category.{u_4, u_1} C
inst✝² : Category.{u_5, u_2} D
inst✝¹ : Category.{?u.12961, u_3} D'
L : C ⥤ D
W : MorphismProperty C
inst✝ : L.IsLocalization W
X : C
P : StructuredArrow (L.obj X) L → Prop
hP₀ : P (StructuredArrow.mk (𝟙 (L.obj X)))
hP₁ :
  ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : L.obj X ⟶ L.obj Y₁), P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ L.map f))
hP₂ :
  ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : L.obj X ⟶ L.obj Y₂),
    P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ (isoOfHom L W w hw).inv))
g : StructuredArrow (L.obj X) L
P' : StructuredArrow (W.Q.obj X) W.Q → Prop := fun g => P ((structuredArrowEquiv W W.Q L) g)
⊢ P ((structuredArrowEquiv W W.Q L) ((structuredArrowEquiv W W.Q L).symm g))
state_after: case hP₀
C : Type u_1
D : Type u_2
D' : Type u_3
inst✝³ : Category.{u_4, u_1} C
inst✝² : Category.{u_5, u_2} D
inst✝¹ : Category.{?u.12961, u_3} D'
L : C ⥤ D
W : MorphismProperty C
inst✝ : L.IsLocalization W
X : C
P : StructuredArrow (L.obj X) L → Prop
hP₀ : P (StructuredArrow.mk (𝟙 (L.obj X)))
hP₁ :
  ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : L.obj X ⟶ L.obj Y₁), P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ L.map f))
hP₂ :
  ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : L.obj X ⟶ L.obj Y₂),
    P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ (isoOfHom L W w hw).inv))
g : StructuredArrow (L.obj X) L
P' : StructuredArrow (W.Q.obj X) W.Q → Prop := fun g => P ((structuredArrowEquiv W W.Q L) g)
⊢ P' (StructuredArrow.mk (𝟙 (W.Q.obj X)))

case hP₁
C : Type u_1
D : Type u_2
D' : Type u_3
inst✝³ : Category.{u_4, u_1} C
inst✝² : Category.{u_5, u_2} D
inst✝¹ : Category.{?u.12961, u_3} D'
L : C ⥤ D
W : MorphismProperty C
inst✝ : L.IsLocalization W
X : C
P : StructuredArrow (L.obj X) L → Prop
hP₀ : P (StructuredArrow.mk (𝟙 (L.obj X)))
hP₁ :
  ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : L.obj X ⟶ L.obj Y₁), P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ L.map f))
hP₂ :
  ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : L.obj X ⟶ L.obj Y₂),
    P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ (isoOfHom L W w hw).inv))
g : StructuredArrow (L.obj X) L
P' : StructuredArrow (W.Q.obj X) W.Q → Prop := fun g => P ((structuredArrowEquiv W W.Q L) g)
⊢ ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : W.Q.obj X ⟶ W.Q.obj Y₁),
    P' (StructuredArrow.mk φ) → P' (StructuredArrow.mk (φ ≫ W.Q.map f))

case hP₂
C : Type u_1
D : Type u_2
D' : Type u_3
inst✝³ : Category.{u_4, u_1} C
inst✝² : Category.{u_5, u_2} D
inst✝¹ : Category.{?u.12961, u_3} D'
L : C ⥤ D
W : MorphismProperty C
inst✝ : L.IsLocalization W
X : C
P : StructuredArrow (L.obj X) L → Prop
hP₀ : P (StructuredArrow.mk (𝟙 (L.obj X)))
hP₁ :
  ∀ ⦃Y₁ Y₂ : C⦄ (f : Y₁ ⟶ Y₂) (φ : L.obj X ⟶ L.obj Y₁), P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ L.map f))
hP₂ :
  ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : L.obj X ⟶ L.obj Y₂),
    P (StructuredArrow.mk φ) → P (StructuredArrow.mk (φ ≫ (isoOfHom L W w hw).inv))
g : StructuredArrow (L.obj X) L
P' : StructuredArrow (W.Q.obj X) W.Q → Prop := fun g => P ((structuredArrowEquiv W W.Q L) g)
⊢ ∀ ⦃Y₁ Y₂ : C⦄ (w : Y₁ ⟶ Y₂) (hw : W w) (φ : W.Q.obj X ⟶ W.Q.obj Y₂),
    P' (StructuredArrow.mk φ) → P' (StructuredArrow.mk (φ ≫ (isoOfHom W.Q W w hw).inv))
tactic: apply induction_structuredArrow' W P'