fact: Definition nattrans_postwhisker {A B C : Type} {F G : A -> B} (K : B -> C) `{IsGraph A, Is1Cat B, Is1Cat C, !Is0Functor F, !Is0Functor G, !Is0Functor K, !Is1Functor K} : NatTrans F G -> NatTrans (K o F) (K o G).
imports: Basics.Overture Basics.Tactics WildCat.Core WildCat.Equiv WildCat.Square