proposition: Lemma fold_right_cons : forall f i x l, fold_right f i (x::l) = f x (fold_right f i l) .
proof: Proof. Proof using. auto. Qed.
imports: Coq.Classes.Morphisms TLC(LibTactics LibLogic LibReflect LibOperation LibProd LibOption LibNat LibInt LibWf LibMonoid LibRelation)