Lemma nat_trans_eq_alt {C C' : category} (F F' : functor C C') (a a' : nat_trans F F'): (∏ x, a x = a' x) -> a = a'. Proof. apply nat_trans_eq. apply homset_property. Qed.
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.TransportMorphisms. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.Univalence.