Equivalences between categories

Content created by Egbert Rijke and Fredrik Bakke.

Created on 2023-09-13.
Last modified on 2023-09-13.

module category-theory.equivalences-of-categories where
Imports 
open import category-theory.categories
open import category-theory.equivalences-of-precategories
open import category-theory.functors-categories

open import foundation.universe-levels

Idea

A functor F : C → D on categories is an equivalence if it is an equivalence on the underlying precategories.

Definition

module _
  {l1 l2 l3 l4 : Level}
  (C : Category l1 l2)
  (D : Category l3 l4)
  where

  is-equiv-functor-Category : functor-Category C D → UU (l1 ⊔ l2 ⊔ l3 ⊔ l4)
  is-equiv-functor-Category =
    is-equiv-functor-Precategory
      ( precategory-Category C)
      ( precategory-Category D)

  equiv-Category : UU (l1 ⊔ l2 ⊔ l3 ⊔ l4)
  equiv-Category =
    equiv-Precategory (precategory-Category C) (precategory-Category D)

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