Notation in seqZ definition

theories/list.v

@@ -396,7 +396,7 @@ Definition positives_unflatten (p : positive) : option (list positive) :=
 
 
 (** [seqZ m n] generates the sequence [m], [m + 1], ..., [m + n - 1] over integers, provided [n >= 0]. If n < 0, then the range is empty. **)
-Definition seqZ (m len: Z) := (fun x: nat => Z.add x m) <$> (seq 0 (Z.to_nat len)).
+Definition seqZ (m len: Z) : list Z := (λ x: nat, Z.add x m) <$> (seq 0 (Z.to_nat len)).
 Arguments seqZ : simpl never.