Theorems · Definition · category theory

CategoryTheory.Functor.PullbackObjObj.fst

{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) → self.pt ⟶ (G.obj (Opposite.op X₁)).obj X₃

the first projection

Defined in

Mathlib.CategoryTheory.Limits.Shapes.Pullback.PullbackObjObj

Cited by

19 results in Mathlib

Foundations

Depth 22 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

CategoryTheory.CategoryCategoryTheory.CategoryCategoryTheory.Category