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