Theorems · Theorem · category theory

CategoryTheory.Functor.PullbackObjObj.isPullback

∀ {C₁ : Type u₁} {C₂ : Type u₂} {C₃ : Type u₃} [inst : CategoryTheory.Category.{v₁, u₁} C₁]
  [inst_1 : CategoryTheory.Category.{v₂, u₂} C₂] [inst_2 : CategoryTheory.Category.{v₃, u₃} C₃]
  {G : CategoryTheory.Functor C₁ᵒᵖ (CategoryTheory.Functor C₃ C₂)} {X₁ Y₁ : C₁} {f₁ : X₁ ⟶ Y₁} {X₃ Y₃ : C₃}
  {f₃ : X₃ ⟶ Y₃} (self : G.PullbackObjObj f₁ f₃),
  CategoryTheory.IsPullback self.fst self.snd ((G.obj (Opposite.op X₁)).map f₃) ((G.map f₁.op).app Y₃)

Defined in

Mathlib.CategoryTheory.Limits.Shapes.Pullback.PullbackObjObj

Cited by

3 results in Mathlib

Foundations

Depth 23 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

CategoryTheory.CategoryCategoryTheory.CategoryCategoryTheory.Category