proposition: Lemma functor_identity_left (C D : precategory) (F : functor C D) : functor_composite (functor_identity C) F = F.
proof: Proof. destruct F as [ [ Fob Fmor ] is ]. destruct is as [ idax compax ] . apply idpath . Defined.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Univalence UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.TransportMorphisms UniMath.CategoryTheory.Core.Univalence