intros.
unfold islanguage at 1 in |- *.
intro.
unfold reconnait at 1 in |- *.
intro.
elim H0.
intros.
assumption.
Qed.
(*									*)
(*  Le predicat isregular definit les langages reguliers.		*)
(*									*)
Definition isregular (l : wordset) : Prop :=
exists q : Ensf,
(exists qd : Ensf,
(exists qa : Ensf,
(exists d : Ensf,
automate q qd qa d /\ eqwordset (reconnait q qd qa d) l))).
Definition isregular_A (l : wordset) : Prop :=
exists q : Ensf,
(exists qd : Ensf,
(exists qa : Ensf,
(exists d : Ensf,
automate_A q qd qa d /\ eqwordset (reconnait_A q qd qa d) l))).

Lemma isregular_A_isregular :
forall l : wordset, isregular_A l -> isregular l.