(* RENAMING of MF.between: *)

Definition betweenf:= MF.between.

Lemma cF_L0_2:forall (m:fmap)(x y z:dart), inv_hmap (L m zero x y) -> let y_0_1 := cF m y in let x0 := cA m zero x in betweenf m y_0_1 z x0 -> cF (L m zero x y) z = if eq_dart_dec x0 z then y_0_1 else cF m z.