--- /dev/null
+(**************************************************************************)
+(* ___ *)
+(* ||M|| *)
+(* ||A|| A project by Andrea Asperti *)
+(* ||T|| *)
+(* ||I|| Developers: *)
+(* ||T|| The HELM team. *)
+(* ||A|| http://helm.cs.unibo.it *)
+(* \ / *)
+(* \ / This file is distributed under the terms of the *)
+(* v GNU General Public License Version 2 *)
+(* *)
+(**************************************************************************)
+
+include "static_2/static/feqg.ma".
+include "static_2/static/aaa_reqg.ma".
+
+(* ATONIC ARITY ASSIGNMENT ON TERMS *****************************************)
+
+(* Properties with generic equivalence on referred entries ******************)
+
+lemma aaa_feqg_conf (S):
+ reflexive … S →
+ ∀G1,G2,L1,L2,T1,T2. ❪G1,L1,T1❫ ≛[S] ❪G2,L2,T2❫ →
+ ∀A. ❪G1,L1❫ ⊢ T1 ⁝ A → ❪G2,L2❫ ⊢ T2 ⁝ A.
+#S #HS #G1 #G2 #L1 #L2 #T1 #T2 * -G2 -L2 -T2
+/2 width=7 by aaa_teqg_conf_reqg/ qed-.