(** ** Remaining constants not defined in Stdlib.Init.Nat *)
(** NB: Aliasing [le] is mandatory, since only a Definition can implement an interface Parameter... *)
Definition eq := @Logic.eq nat.
Definition le := Peano.le.
Definition lt := Peano.lt.
(** ** Basic specifications : pred add sub mul *)

Lemma leb_le n m : (n <=? m) = true <-> n <= m.
#[global]
Instance Decidable_le_nat : forall (x y : nat), Decidable (x <= y) := {
Decidable_spec := Nat.leb_le x y
}.