End SEPAR.
Section OTHER.
(* codage booleen en entier *)
Definition Int (b : bool) := if b then 1%Z else 0%Z.

Lemma true_not_false : forall b : bool, b = true -> false <> b.
Axiom
funct_eq :
forall (E F : Set) (g h : E -> F), (forall e : E, g e = h e) -> g = h.