right_identity_natural_transformation_1 o right_identity_natural_transformation_2 = 1 /\ right_identity_natural_transformation_2 o right_identity_natural_transformation_1 = 1. Proof. nt_id_t. Qed.
Require Import Category.Core Functor.Core Functor.Identity Functor.Composition.Core NaturalTransformation.Core NaturalTransformation.Identity NaturalTransformation.Composition.Core NaturalTransformation.Paths.