{A B C : Type} `{Is1Cat A, Is1Cat B, Is1Cat C} (F : A -> B -> C) `{!Is0Bifunctor F, !Is1Bifunctor F} {a0 a1 : A} (f : a0 $-> a1) (b : B) : fmap11 F f (Id b) $== fmap10 F f b := fmap11_is_fmap01_fmap10 _ _ _ $@ (fmap01_id _ _ _ $@R _) $@ cat_idl _.
Require Import Basics.Overture Basics.Tactics. Require Import Types.Forall Types.Prod. Require Import WildCat.Core WildCat.Prod WildCat.Equiv WildCat.NatTrans