Definition is_left_adjoint_to_left_adjoint {C₁ C₂ : bicat_of_univ_cats} {F : C₁ --> C₂} (HF : is_left_adjoint F) : left_adjoint F. Proof. simple refine ((right_adjoint HF ,, _ ,, _) ,, (_ ,, _)). - exact (adjunit HF). - exact (adjcounit HF). - abstract (use nat_trans_eq ; [ apply homset_property | ] ; intro x ; cbn ; rewrite !id_left, !id_right ; exact (pr122 HF x)). - abstract (use nat_trans_eq ; [ apply homset_property | ] ; intro x ; cbn ; rewrite !id_left, !id_right ; exact (pr222 HF x)). Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.NaturalTransformations. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.whiskering. Require Import UniMath.CategoryTheory.Categories.StandardCategories. Require Import UniMath.CategoryTheory.Adjunctions.Core. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.Invertible_2cells. Require Import UniMath.Bicategories.Core.Unitors. Require Import UniMath.Bicategories.Core.BicategoryLaws. Require Import UniMath.Bicategories.Core.Univalence. Require Import UniMath.Bicategories.Core.AdjointUnique. Require Import UniMath.Bicategories.Core.EquivToAdjequiv. Require Import UniMath.Bicategories.Core.UnivalenceOp. Require Import UniMath.Bicategories.Core.Examples.OpMorBicat. Require Import UniMath.Bicategories.Core.Examples.BicatOfUnivCats. Require Import UniMath.Bicategories.Morphisms.Adjunctions. Require Import UniMath.Bicategories.Morphisms.FullyFaithful. Require Import UniMath.Bicategories.Morphisms.DiscreteMorphisms. Require Import UniMath.Bicategories.Morphisms.Examples.MorphismsInOp1Bicat.