Implicit Arguments ageN_det.

(* Specifications: *)
Lemma ageN_necR: forall p1 p2,
(exists n, ageN n p1 p2) = necR p1 p2.
Lemma ageN_level: forall n p1 p2,
ageN n p1 p2 ->
level p1 = level p2 + n.
Lemma ageN_necR: forall p1 p2,
(exists n, ageN n p1 p2) = necR p1 p2.
Lemma ageN_level: forall n p1 p2,
ageN n p1 p2 ->
level p1 = level p2 + n.