}.
notation "hbox(a break ⇒ b)" right associative with precedence 20 for @{ 'Imply $a $b }.
-(*
+
ndefinition function_space_setoid: setoid → setoid → setoid.
#A; #B; napply (mk_setoid ?????);
##[ napply (function_space A B);
##| #f; #f1; napply (∀a:A. proofs (eq ? (f a) (f1 a)));
##| nwhd; #x; #a;
napply (f_ok ? ? x ? ? ?); (* QUI!! *)
- unfold carr; unfold proofs; simplify;
+(* unfold carr; unfold proofs; simplify;
apply (refl A)
| simplify;
intros;