Module Zabs2Nat.
(** Results about [Z.abs_nat], converting absolute values of [Z] integers to [nat]. *)
(** [Z.abs_nat], basic equations *)
(** [Z.abs_nat] and usual operations, with non-negative integers *)
(** [Z.abs_nat] and usual operations, statements with [Z.abs] *)

Lemma inj_succ_abs n : Z.abs_nat (Z.succ (Z.abs n)) = S (Z.abs_nat n).