Notation value := (Syntax.value constructor).Notation term := (Syntax.term variable function constructor).Notation pattern := (Syntax.pattern variable constructor).Notation rule := (Syntax.rule variable function constructor).(* proof tree *)

Inductive cbv : Type :=
| cbv_constr : list cbv -> term -> value -> cbv
| cbv_split : list cbv -> cbv -> term -> value -> cbv
| cbv_function : nat -> (variable -> value) -> cbv -> term -> value -> cbv.(* proof tree *)

Inductive cbv : Type :=
| cbv_constr : list cbv -> term -> value -> cbv
| cbv_split : list cbv -> cbv -> term -> value -> cbv
| cbv_function : nat -> (variable -> value) -> cbv -> term -> value -> cbv.(* proof tree *)

Inductive cbv : Type :=
| cbv_constr : list cbv -> term -> value -> cbv
| cbv_split : list cbv -> cbv -> term -> value -> cbv
| cbv_function : nat -> (variable -> value) -> cbv -> term -> value -> cbv.(* proof tree *)

Inductive cbv : Type :=
| cbv_constr : list cbv -> term -> value -> cbv
| cbv_split : list cbv -> cbv -> term -> value -> cbv
| cbv_function : nat -> (variable -> value) -> cbv -> term -> value -> cbv.

Lemma cbv_ind2 : forall (P : cbv -> Prop), (forall lp t v, (forall p, In p lp -> P p) -> P (cbv_constr lp t v)) -> (forall lp p t v, (forall p, In p lp -> P p) -> P p -> P (cbv_split lp p t v)) -> (forall n s p t v, P p -> P (cbv_function n s p t v)) -> forall p, P p.