fact: Definition trans_postwhisker {A B C : Type} {F G : A -> B} (K : B -> C) `{Is01Cat B, Is01Cat C, !Is0Functor K} (gamma : F $=> G) : K o F $=> K o G := fun a => fmap K (gamma a).
imports: Basics.Overture Basics.Tactics WildCat.Core WildCat.Equiv WildCat.Square