Section Porder.
Load "hCoefStructure".
Load "hOrderStructure".
Load "hTerm".
Set Implicit Arguments.
Unset Strict Implicit.
Definition ltT (a b : Term A n) : Prop := ltM (T2M a) (T2M b).
Hint Unfold ltT.
Set Strict Implicit.
Unset Implicit Arguments.
unfold transitive, ltT in |- *; auto.
intros x y z H' H'0; apply (ltM_trans _ _ _ _ os) with (y := T2M y); auto.
Qed.
unfold eqT in |- *; unfold ltT in |- *; intros a b c H; rewrite H; auto.
Qed.
unfold eqT in |- *; unfold ltT in |- *; intros a b c H; rewrite H; auto.
Qed.
intros x y; unfold eqT in |- *; simpl in |- *; auto.
apply eqmon_dec.
Qed.
intros x y; exact (ltM_dec (T2M x) (T2M y)).
Qed.
unfold eqT, ltT in |- *; simpl in |- *; intros x y H; rewrite H; auto.
apply ltM_nonrefl with (1 := os).
Qed.
unfold eqT, ltT, not in |- *; simpl in |- *; intros x y H Q;
absurd (ltM (T2M x) (T2M y)); auto; rewrite Q; auto.
apply ltM_nonrefl with (1 := os).
Qed.
intros x; unfold ltT in |- *; apply ltM_nonrefl with (1 := os).
Qed.
Hint Resolve ltT_not_eqT eqT_not_ltT ltT_not_refl.
intros x y H'; red in |- *; intros H'0; absurd (ltT x x); auto.
apply ltT_trans with (y := y); auto.
Qed.
Hint Resolve ltT_not_ltT.
unfold eqT, ltT in |- *; intros a b c d R1 R2; rewrite R1; rewrite R2; auto.
Qed.
Let eqT_refl := eqT_refl A n.
intros a b c H' H'0; apply ltT_eqT with (a := a) (c := c); auto.
Qed.
intros a b c H' H'0; apply ltT_eqT with (a := c) (c := a); auto.
Qed.
intros a b c; case a; case b; case c; unfold ltT in |- *; simpl in |- *; auto.
intros a0 m a1 m0 a2 m1 H.
apply ltM_plusl with (1 := os); auto.
Qed.
intros a b c; case a; case b; case c; unfold ltT in |- *; simpl in |- *; auto.
intros; apply ltM_plusr with (1 := os); auto.
Qed.
intros a; case a; unfold ltT in |- *; simpl in |- *; auto.
intros a0 m; unfold M1 in |- *; apply (M1_min _ _ _ _ os); auto.
Qed.
intros a b c; case a; case b; case c; unfold ltT in |- *; simpl in |- *; auto.
Qed.
intros a b; case a; case b; unfold ltT in |- *; simpl in |- *; auto.
Qed.
Set Implicit Arguments.
Unset Strict Implicit.
Definition pX := cons (A:=Term A n).
Set Strict Implicit.
Unset Implicit Arguments.
Definition pO := nil (A:=Term A n).
Let consA := cons (A:=mon n).
Let nilA := nil (A:=mon n).
Let listA := list (mon n).
Hint Unfold consA nilA listA.
Fixpoint fP (a : list (Term A n)) : listA :=
match a with
| nil => nilA
| b :: p => consA (T2M b) (fP p)
end.
intros p; elim p; simpl in |- *; auto.
intros a l H' q.
rewrite (H' q); auto.
Qed.
Let DescA := Desc (mon n) ltM.
Set Implicit Arguments.
Unset Strict Implicit.
Definition olist (p : list (Term A n)) := DescA (fP p).
Hint Resolve d_nil d_one.
Hint Unfold olist DescA.
Set Strict Implicit.
Unset Implicit Arguments.
unfold olist, ltT in |- *; simpl in |- *; auto.
intros a b H'.
generalize (d_conc _ ltM (T2M b) (T2M a) nilA); simpl in |- *; auto.
Qed.
Hint Resolve olistOne.
unfold olist, ltT in |- *; simpl in |- *; auto.
red in |- *; unfold nilA in |- *; apply d_nil.
Qed.
intros x y z t p; case p; simpl in |- *; auto.
intros H'; injection H'; simpl in |- *; auto.
intros a l; case l; simpl in |- *; auto.
intros H'; discriminate H'.
intros a0 l0; case l0; simpl in |- *; auto.
intros H'; discriminate H'.
intros a1 l1 H'; discriminate H'.
Qed.
unfold ltT, olist in |- *; simpl in |- *; auto.
intros l a b.
rewrite (fP_app l (pX a (pX b pO))); simpl in |- *; auto.
intros H'.
elim (dist_Desc_concat _ ltM (fP l) (consA (T2M a) (consA (T2M b) nilA)));
[ intros H'5 H'6; try exact H'6 | idtac ]; auto.
simple inversion H'6.
discriminate H.
discriminate H.
elim (app2_inv y x (T2M a) (T2M b) l0); [ intros H'8 H'9 | idtac ]; auto.
rewrite H'9; rewrite H'8; auto.
Qed.
intros l; pattern l in |- *; apply (rev_ind (A:=Term A n)); auto.
intros x l0; case l0.
simpl in |- *.
unfold olist in |- *; simpl in |- *.
intros H' a b H'0 H'1; try assumption.
apply (d_conc _ ltM (T2M x) (T2M b) (consA (T2M a) nilA)).
generalize (olist_ltT pO); unfold ltT, olist in |- *; simpl in |- *; auto.
apply (olistOne a b); auto.
intros b l1 H' a b0 H'0; generalize H'; pattern l1 in |- *;
apply (rev_ind (A:=Term A n)); unfold ltT, olist in |- *;
simpl in |- *; auto.
intros H'2 H'3.
apply (d_conc _ ltM (T2M x) (T2M b) (consA (T2M a) (consA (T2M b0) nilA)));
auto.
generalize (olist_ltT (b0 :: nil)); unfold ltT, olist in |- *; simpl in |- *;
auto.
simpl in |- *; apply H'2; auto.
apply (desc_prefix _ ltM (consA (T2M b0) (consA (T2M b) nilA)) (T2M x)); auto.
intros x1 l2; rewrite (fP_app (l2 ++ x1 :: nil) (x :: nil));
rewrite (fP_app l2 (x1 :: nil)); rewrite (fP_app l2 (x :: nil)).
intros H'2 H'3 H'4;
apply
(d_conc _ ltM (T2M x) (T2M x1)
(consA (T2M a) (consA (T2M b0) (consA (T2M b) (fP l2))))).
generalize (olist_ltT (pX b0 (pX b l2))); unfold olist, ltT in |- *;
intros H'5; apply H'5.
rewrite (fP_app (pX b0 (pX b l2)) (pX x1 (pX x pO))); simpl in |- *; auto.
generalize (app_ass (fP l2) (consA (T2M x1) nilA) (consA (T2M x) nilA));
simpl in |- *; auto; unfold consA in |- *.
intros H'6; rewrite <- H'6; simpl in |- *; auto.
simpl in |- *; apply H'3; auto; apply (desc_prefix _ ltM) with (a := T2M x);
auto.
Qed.
intros x p; elim p; simpl in |- *; auto.
intros a l H'; rewrite H'; auto.
Qed.
intros a b H'; rewrite H'; auto.
Qed.
unfold olist, eqT in |- *.
simpl in |- *; auto.
intros a b p H' H'0; rewrite <- H'0; auto.
Qed.
intros l a b H'.
elim (dist_Desc_concat _ ltM (consA (T2M a) (consA (T2M b) nilA)) (fP l));
[ intros H'5 H'6 | idtac ]; auto.
apply olist_ltT with (l := pO); auto.
Qed.
intros l a H'.
elim (dist_Desc_concat _ ltM (consA (T2M a) nilA) (fP l));
[ intros H'5 H'6 | idtac ]; auto.
Qed.
intros l; case l.
intros a b H'.
elim (dist_Desc_concat _ ltM (consA (T2M a) nilA) (consA (T2M b) nilA));
[ intros H'5 H'6 | idtac ]; auto.
intros b l0 a b0 H'.
apply olist_cons; auto.
apply ltT_trans with (y := b0).
apply olist_pX_order with (l := l0); auto.
apply olist_X with (a := a); auto.
apply olist_pX_order with (l := b :: l0); auto.
apply olist_X with (a := b0); auto.
apply olist_X with (a := a); auto.
Qed.
Set Implicit Arguments.
Unset Strict Implicit.
Inductive ltP : list (Term A n) -> list (Term A n) -> Prop :=
| ltPO : forall x p, ltP pO (pX x p)
| ltP_hd : forall x y p q, ltT x y -> ltP (pX x p) (pX y q)
| ltP_tl : forall x y p q, eqT x y -> ltP p q -> ltP (pX x p) (pX y q).
Set Strict Implicit.
Unset Implicit Arguments.
intros p q H'; elim H'; auto.
simpl in |- *; intros; apply (Lt_nil (mon n)); auto.
simpl in |- *; intros; apply (Lt_hd (mon n)); auto.
simpl in |- *; unfold eqT in |- *; (intros x y p1 q1 H; rewrite H).
simpl in |- *; intros; apply (Lt_tl (mon n)); auto.
Qed.
Hint Resolve fltP.
intros x; elim x.
red in |- *; intros H'; inversion H'.
intros a l H'; red in |- *; intros H'0; simple inversion H'0.
discriminate H.
injection H1.
injection H0.
intros H'1 H'2 H'3 H'4; rewrite H'2; rewrite H'4; intros H'5.
apply (ltT_not_refl a); auto.
injection H1; injection H2.
intros H'1 H'2 H'3 H'4; rewrite H'1; rewrite H'3; auto.
Qed.
Hint Resolve ltPO.
intros x y z H'; generalize z; clear z; elim H'.
intros x0 p z; case z; auto.
intros H'0; inversion H'0.
intros x0 y0 p q H'0 z H'1; simple inversion H'1.
discriminate H.
rewrite <- H1.
intros H'2; try assumption.
apply ltP_hd; auto.
apply ltT_trans with (y := y0); auto.
injection H0.
intros H'3 H'4; rewrite <- H'4; auto.
rewrite <- H2.
intros H'2 H'3; apply ltP_hd; auto.
apply ltT_eqTl with (a := x1); auto.
injection H1.
intros H'4 H'5; rewrite H'5; auto.
intros x0 y0 p q H'0 H'1 H'2 z H'3; simple inversion H'3.
discriminate H.
rewrite <- H1; auto.
intros H'4; apply ltP_hd; auto.
apply ltT_eqTr with (a := y0).
apply (eqT_sym A n); auto.
injection H0.
intros H'5 H'6; rewrite <- H'6; auto.
rewrite <- H2.
intros H'4 H'5; apply ltP_tl; auto.
apply (eqT_trans A n) with (y := x1); auto.
injection H1.
intros H'6 H'7; rewrite H'7; auto.
apply H'2; auto.
injection H1.
intros H'6; rewrite <- H'6; auto.
Qed.
intros a p; case p; auto.
intros b l H'.
apply ltP_hd; auto.
apply olist_pX_order with (l := l); auto.
Qed.
intros a p; case p; auto.
intros H' H'1; unfold olist, DescA, consA in |- *; simpl in |- *;
unfold consA, nilA in |- *.
apply d_one; auto.
intros b l H' H'0.
apply olist_cons; auto.
simple inversion H'0.
discriminate H.
injection H1; injection H0; intros H'1 H'2 H'3 H'4;
(rewrite H'2; rewrite H'4); auto.
injection H2; intros H'1 H'2; rewrite H'1; auto.
unfold pO in |- *; intros H'3 H'4; inversion H'4.
Qed.
intros a b c p q H1; inversion_clear H1.
intros; apply ltT_trans with (y := a); auto.
apply eqT_compat_ltTl.
apply eqT_sym; trivial.
Qed.
Hint Resolve ltP_order_comp.
Set Implicit Arguments.
Unset Strict Implicit.
Definition nZterm : list (Term A n) -> Prop.
intros H'; elim H'.
exact True.
intros a P1 Rec.
exact (Rec /\ ~ zeroP (A:=A) A0 eqA (n:=n) a).
Defined.
Definition canonical (a : list (Term A n)) : Prop := olist a /\ nZterm a.
Set Strict Implicit.
Unset Implicit Arguments.
intros a H'; elim H'; auto.
Qed.
Hint Resolve canonical_imp_olist.

Theorem canonical0 :
forall a b,
ltT b a ->
~ zeroP (A:=A) A0 eqA (n:=n) a ->
~ zeroP (A:=A) A0 eqA (n:=n) b -> canonical (pX a (pX b pO)).