Theorems · Definition · category theory

CategoryTheory.Bicategory.rightUnitorNatIsoCat

{B : Type u} →
  [inst : CategoryTheory.Bicategory B] →
    (a b : B) →
      (CategoryTheory.Bicategory.postcomposingCat a b b).obj (CategoryTheory.CategoryStruct.id b) ≅
        CategoryTheory.CategoryStruct.id (CategoryTheory.Cat.of (a ⟶ b))

Right unitor as a 2-isomorphism in Cat.

Defined in

Mathlib.CategoryTheory.Bicategory.Yoneda

Cited by

2 results in Mathlib

Foundations

Depth 30 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

CategoryTheory.Bicategory