(** Generic properties of advanced functions. *)
Include ZExtraProp.

(** In generic statements, the predicates [lt] and [le] have been favored, whereas [gt] and [ge] don't even exist in the abstract layers. The use of [gt] and [ge] is hence not recommended. We provide here the bare minimal results to related them with [lt] and [le]. *)
Lemma gt_lt_iff n m : n > m <-> m < n.