include "datatypes/pairs.ma".
include "datatypes/bool.ma".
-include "logic/cprop.ma".
+include "sets/sets.ma".
ninductive Admit : CProp[0] ≝ .
naxiom admit : Admit.
nlet rec eq_list (A : setoid) (l1, l2 : list A) on l1 : CProp[0] ≝
match l1 with
-[ nil ⇒ match l2 return λ_.CProp[0] with [ nil ⇒ ? | _ ⇒ ? ]
-| cons x xs ⇒ match l2 with [ nil ⇒ ? | cons y ys ⇒ x = y ∧ eq_list ? xs ys]].
-##[ napply True|napply False|napply False]nqed.
+[ nil ⇒ match l2 return λ_.CProp[0] with [ nil ⇒ True | _ ⇒ False ]
+| cons x xs ⇒ match l2 with [ nil ⇒ False | cons y ys ⇒ x = y ∧ eq_list ? xs ys]].
ndefinition LIST : setoid → setoid.
#S; @(list S); @(eq_list S); ncases admit; nqed.
+alias symbol "hint_decl" (instance 1) = "hint_decl_Type1".
unification hint 0 ≔ S : setoid;
- T ≟ carr S,
- P1 ≟ refl ? (eq (LIST S)),
- P2 ≟ sym ? (eq (LIST S)),
- P3 ≟ trans ? (eq (LIST S)),
- X ≟ mk_setoid (list S) (mk_equivalence_relation ? (eq_list S) P1 P2 P3)
+ P1 ≟ refl ? (eq0 (LIST S)),
+ P2 ≟ sym ? (eq0 (LIST S)),
+ P3 ≟ trans ? (eq0 (LIST S)),
+ X ≟ mk_setoid (list S) (mk_equivalence_relation ? (eq_list S) P1 P2 P3),
+ T ≟ carr S
(*-----------------------------------------------------------------------*) ⊢
carr X ≡ list T.
+unification hint 0 ≔ S,a,b;
+ R ≟ LIST S,
+ L ≟ (list S)
+(* -------------------------------------------- *) ⊢
+ eq_list S a b ≡ eq_rel L (eq0 R) a b.
+
notation "hvbox(hd break :: tl)"
right associative with precedence 47
for @{'cons $hd $tl}.
ndefinition associative ≝ λA:setoid.λf:A → A → A.∀x,y,z.f x (f y z) = f (f x y) z.
-ninductive one : Type[0] ≝ unit : one.
-ndefinition force ≝
- λS:Type[1].λs:S.λT:Type[1].λt:T.λlock:one.
- match lock return λ_.Type[1] with [ unit ⇒ T].
+ntheorem associative_append: ∀A:setoid.associative (list A) (append A).
+#A;#x;#y;#z;nelim x[ napply # |#a;#x1;#H;nnormalize;/2/]nqed.
-nlet rec lift (S:Type[1]) (s:S) (T:Type[1]) (t:T) (lock:one) on lock : force S s T t lock ≝
- match lock return λlock.force S s T t lock with [ unit ⇒ t ].
+interpretation "iff" 'iff a b = (iff a b).
-ncoercion lift : ∀S:Type[1].∀s:S.∀T:Type[1].∀t:T.∀lock:one. force S s T t lock ≝ lift
- on s : ? to force ?????.
+ninductive eq (A:Type[0]) (x:A) : A → CProp[0] ≝ refl: eq A x x.
-unification hint 0 ≔ R : setoid;
- TR ≟ setoid, MR ≟ (carr R), lock ≟ unit
-(* ---------------------------------------- *) ⊢
- setoid ≡ force ?(*Type[0]*) MR TR R lock.
+nlemma eq_rect_Type0_r':
+ ∀A.∀a,x.∀p:eq ? x a.∀P: ∀x:A. eq ? x a → Type[0]. P a (refl A a) → P x p.
+ #A; #a; #x; #p; ncases p; #P; #H; nassumption.
+nqed.
-ntheorem associative_append: ∀A:setoid.associative (list A) (append A).
-#A;#x;#y;#z;nelim x[//|#a;#x1;#H;nnormalize;/2/]nqed.
+nlemma eq_rect_Type0_r:
+ ∀A.∀a.∀P: ∀x:A. eq ? x a → Type[0]. P a (refl A a) → ∀x.∀p:eq ? x a.P x p.
+ #A; #a; #P; #p; #x0; #p0; napply (eq_rect_Type0_r' ??? p0); nassumption.
+nqed.
-interpretation "iff" 'iff a b = (iff a b).
+nlemma eq_rect_CProp0_r':
+ ∀A.∀a,x.∀p:eq ? x a.∀P: ∀x:A. eq ? x a → CProp[0]. P a (refl A a) → P x p.
+ #A; #a; #x; #p; ncases p; #P; #H; nassumption.
+nqed.
+
+nlemma eq_rect_CProp0_r:
+ ∀A.∀a.∀P: ∀x:A. eq ? x a → CProp[0]. P a (refl A a) → ∀x.∀p:eq ? x a.P x p.
+ #A; #a; #P; #p; #x0; #p0; napply (eq_rect_CProp0_r' ??? p0); nassumption.
+nqed.
+
+notation < "a = b" non associative with precedence 45 for @{ 'eqpp $a $b}.
+interpretation "bool eq" 'eqpp a b = (eq bool a b).
-naxiom eq_bool : bool → bool → CProp[0].
ndefinition BOOL : setoid.
-@bool; @eq_bool; ncases admit.nqed.
+@bool; @(eq bool); ncases admit.nqed.
+alias symbol "hint_decl" (instance 1) = "hint_decl_Type1".
+alias id "refl" = "cic:/matita/ng/properties/relations/refl.fix(0,1,3)".
unification hint 0 ≔ ;
- P1 ≟ refl ? (eq BOOL),
- P2 ≟ sym ? (eq BOOL),
- P3 ≟ trans ? (eq BOOL),
- X ≟ mk_setoid bool (mk_equivalence_relation ? eq_bool P1 P2 P3)
+ P1 ≟ refl ? (eq0 BOOL),
+ P2 ≟ sym ? (eq0 BOOL),
+ P3 ≟ trans ? (eq0 BOOL),
+ X ≟ mk_setoid bool (mk_equivalence_relation ? (eq bool) P1 P2 P3)
(*-----------------------------------------------------------------------*) ⊢
carr X ≡ bool.
+unification hint 0 ≔ a,b;
+ R ≟ BOOL,
+ L ≟ bool
+(* -------------------------------------------- *) ⊢
+ eq bool a b ≡ eq_rel L (eq0 R) a b.
+
nrecord Alpha : Type[1] ≝ {
acarr :> setoid;
- eqb: acarr → acarr → bool (*;
- eqb_true: ∀x,y. (eqb x y = true) = (x = y)*)
+ eqb: acarr → acarr → bool;
+ eqb_true: ∀x,y. (eqb x y = true) = (x = y)
}.
notation "a == b" non associative with precedence 45 for @{ 'eqb $a $b }.
alias symbol "hint_decl" (instance 1) = "hint_decl_Type1".
alias id "carr" = "cic:/matita/ng/sets/setoids/carr.fix(0,0,1)".
unification hint 0 ≔ A : Alpha;
- T ≟ acarr A,
- P1 ≟ refl ? (eq (RE A)),
- P2 ≟ sym ? (eq (RE A)),
- P3 ≟ trans ? (eq (RE A)),
- X ≟ mk_setoid (re T) (mk_equivalence_relation ? (eq_re A) P1 P2 P3)
+ P1 ≟ refl ? (eq0 (RE A)),
+ P2 ≟ sym ? (eq0 (RE A)),
+ P3 ≟ trans ? (eq0 (RE A)),
+ X ≟ mk_setoid (re A) (mk_equivalence_relation ? (eq_re A) P1 P2 P3),
+ T ≟ acarr A
(*-----------------------------------------------------------------------*) ⊢
carr X ≡ (re T).
+unification hint 0 ≔ A,a,b;
+ R ≟ RE A,
+ L ≟ re A
+(* -------------------------------------------- *) ⊢
+ eq_re A a b ≡ eq_rel L (eq0 R) a b.
+
notation < "a \sup ⋇" non associative with precedence 90 for @{ 'pk $a}.
-notation > "a ^ *" non associative with precedence 90 for @{ 'pk $a}.
+notation > "a ^ *" non associative with precedence 75 for @{ 'pk $a}.
interpretation "star" 'pk a = (k ? a).
interpretation "or" 'plus a b = (o ? a b).
notation "ϵ" non associative with precedence 90 for @{ 'epsilon }.
interpretation "epsilon" 'epsilon = (e ?).
-notation "∅" non associative with precedence 90 for @{ 'empty }.
-interpretation "empty" 'empty = (z ?).
-
-nrecord Setl (A : Type[0]) : Type[1] ≝ { in_set : A → CProp[0] }.
-ndefinition Lang ≝ λA.Setl (list A).
+notation "0" non associative with precedence 90 for @{ 'empty_r }.
+interpretation "empty" 'empty_r = (z ?).
-interpretation "in Setl" 'mem x l = (in_set ? l x).
-interpretation "compr Lang" 'comprehension t f = (mk_Setl t f).
+notation > "'lang' S" non associative with precedence 90 for @{ Ω^(list $S) }.
+notation > "'Elang' S" non associative with precedence 90 for @{ 𝛀^(list $S) }.
nlet rec flatten S (l : list (list S)) on l : list S ≝
match l with [ nil ⇒ [ ] | cons w tl ⇒ w @ flatten ? tl ].
-nlet rec conjunct S (l : list (list S)) (L : Lang S) on l: CProp[0] ≝
+nlet rec conjunct S (l : list (list S)) (L : lang S) on l: CProp[0] ≝
match l with [ nil ⇒ True | cons w tl ⇒ w ∈ L ∧ conjunct ? tl L ].
-ndefinition empty_lang ≝ λS.{ w ∈ list S | False }.
-notation "{}" non associative with precedence 90 for @{'empty_lang}.
-interpretation "empty lang" 'empty_lang = (empty_lang ?).
-
-ndefinition sing_lang ≝ λS:Alpha.λx.{ w ∈ list S | x = w }.
+ndefinition sing_lang : ∀A:setoid.∀x:A.Ω^A ≝ λS.λx.{ w | x = w }.
interpretation "sing lang" 'singl x = (sing_lang ? x).
-ndefinition union ≝ λS.λl1,l2.{ w ∈ list S | w ∈ l1 ∨ w ∈ l2}.
-interpretation "union lang" 'union a b = (union ? a b).
+interpretation "subset construction with type" 'comprehension t \eta.x =
+ (mk_powerclass t x).
-ndefinition cat ≝
- λS:Alpha.λl1,l2.{ w ∈ list S | ∃w1,w2.w1 @ w2 = w ∧ w1 ∈ l1 ∧ w2 ∈ l2}.
+ndefinition cat : ∀A:setoid.∀l1,l2:lang A.lang A ≝
+ λS.λl1,l2.{ w ∈ list S | ∃w1,w2.w =_0 w1 @ w2 ∧ w1 ∈ l1 ∧ w2 ∈ l2}.
interpretation "cat lang" 'pc a b = (cat ? a b).
-ndefinition star ≝
- λS:Alpha.λl.{ w ∈ list S | ∃lw.flatten ? lw = w ∧ conjunct ? lw l}.
+ndefinition star : ∀A:setoid.∀l:lang A.lang A ≝
+ λS.λl.{ w ∈ list S | ∃lw.flatten ? lw = w ∧ conjunct ? lw l}.
interpretation "star lang" 'pk l = (star ? l).
-notation > "𝐋 term 90 E" non associative with precedence 75 for @{L_re ? $E}.
-nlet rec L_re (S : Alpha) (r : re S) on r : Lang S ≝
+notation > "𝐋 term 70 E" non associative with precedence 75 for @{L_re ? $E}.
+nlet rec L_re (S : Alpha) (r : re S) on r : lang S ≝
match r with
-[ z ⇒ {}
+[ z ⇒ ∅
| e ⇒ { [ ] }
| s x ⇒ { [x] }
| c r1 r2 ⇒ 𝐋 r1 · 𝐋 r2
| o r1 r2 ⇒ 𝐋 r1 ∪ 𝐋 r2
| k r1 ⇒ (𝐋 r1) ^*].
-notation "𝐋 term 90 E" non associative with precedence 75 for @{'L_re $E}.
+notation "𝐋 term 70 E" non associative with precedence 75 for @{'L_re $E}.
interpretation "in_l" 'L_re E = (L_re ? E).
notation "a || b" left associative with precedence 30 for @{'orb $a $b}.
ncoercion pc : ∀S.∀p:pitem S. pitem S → pitem S ≝ pc on _p : pitem ? to ∀_:?.?.
interpretation "patom" 'ps a = (ps ? a).
interpretation "pepsilon" 'epsilon = (pe ?).
-interpretation "pempty" 'empty = (pz ?).
+interpretation "pempty" 'empty_r = (pz ?).
notation > "|term 19 e|" non associative with precedence 70 for @{forget ? $e}.
nlet rec forget (S: Alpha) (l : pitem S) on l: re S ≝
match l with
- [ pz ⇒ ∅
+ [ pz ⇒ 0
| pe ⇒ ϵ
| ps x ⇒ `x
| pp x ⇒ `x
| pc E1 E2 ⇒ (|E1| · |E2|)
| po E1 E2 ⇒ (|E1| + |E2|)
| pk E ⇒ |E|^* ].
-notation < ".|term 19 e|" non associative with precedence 70 for @{'forget $e}.
+notation < "|term 19 e|" non associative with precedence 70 for @{'forget $e}.
interpretation "forget" 'forget a = (forget ? a).
-notation > "𝐋\p\ term 90 E" non associative with precedence 90 for @{in_pl ? $E}.
-nlet rec in_pl (S : Alpha) (r : pitem S) on r : word S → Prop ≝
+notation > "𝐋\p\ term 70 E" non associative with precedence 75 for @{L_pi ? $E}.
+nlet rec L_pi (S : Alpha) (r : pitem S) on r : lang S ≝
match r with
-[ pz ⇒ {}
-| pe ⇒ {}
-| ps _ ⇒ {}
+[ pz ⇒ ∅
+| pe ⇒ ∅
+| ps _ ⇒ ∅
| pp x ⇒ { [x] }
-| pc r1 r2 ⇒ 𝐋\p\ r1 · 𝐋 .|r2| ∪ 𝐋\p\ r2
+| pc r1 r2 ⇒ 𝐋\p\ r1 · 𝐋 |r2| ∪ 𝐋\p\ r2
| po r1 r2 ⇒ 𝐋\p\ r1 ∪ 𝐋\p\ r2
-| pk r1 ⇒ 𝐋\p\ r1 · 𝐋 (.|r1|^* ) ].
-notation > "𝐋\p term 90 E" non associative with precedence 90 for @{'in_pl $E}.
-notation "𝐋\sub(\p) term 90 E" non associative with precedence 90 for @{'in_pl $E}.
-interpretation "in_pl" 'in_pl E = (in_pl ? E).
-interpretation "in_pl mem" 'mem w l = (in_pl ? l w).
+| pk r1 ⇒ 𝐋\p\ r1 · 𝐋 (|r1|^* ) ].
+notation > "𝐋\p term 70 E" non associative with precedence 75 for @{'L_pi $E}.
+notation "𝐋\sub(\p) term 70 E" non associative with precedence 75 for @{'L_pi $E}.
+interpretation "in_pl" 'L_pi E = (L_pi ? E).
-ndefinition epsilon ≝ λS,b.if b then { ([ ] : word S) } else {}.
+(* The caml, as some patches for it *)
+ncoercion setoid1_of_setoid : ∀s:setoid. setoid1 ≝ setoid1_of_setoid on _s: setoid to setoid1.
+
+alias symbol "hint_decl" (instance 1) = "hint_decl_CProp2".
+unification hint 0 ≔ S : setoid, x,y;
+ SS ≟ LIST S,
+ TT ≟ setoid1_of_setoid SS
+(*-----------------------------------------*) ⊢
+ eq_list S x y ≡ eq_rel1 ? (eq1 TT) x y.
+
+unification hint 0 ≔ SS : setoid;
+ S ≟ carr SS,
+ TT ≟ setoid1_of_setoid (LIST SS)
+(*-----------------------------------------------------------------*) ⊢
+ list S ≡ carr1 TT.
+
+(* Ex setoid support *)
+nlemma Sig: ∀S,T:setoid.∀P: S → (T → CPROP).
+ ∀y,z:T.y = z → (∀x.y=z → P x y = P x z) → (Ex S (λx.P x y)) =_1 (Ex S (λx.P x z)).
+#S T P y z Q E; @; *; #x Px; @x; nlapply (E x Q); *; /2/; nqed.
+
+notation "∑" non associative with precedence 90 for @{Sig ?????}.
+
+nlemma test : ∀S:setoid. ∀ee: S ⇒_1 S ⇒_1 CPROP.
+ ∀x,y:setoid1_of_setoid S.x =_1 y → (Ex S (λw.ee x w ∧ True)) =_1 (Ex S (λw.ee y w ∧ True)).
+#S m x y E;
+napply (.=_1 (∑ E (λw,H.(H ╪_1 #)╪_1 #))).
+napply #.
+nqed.
+
+nlemma test2 : ∀S:setoid. ∀ee: S ⇒_1 S ⇒_1 CPROP.
+ ∀x,y:setoid1_of_setoid S.x =_1 y →
+ (True ∧ (Ex S (λw.ee x w ∧ True))) =_1 (True ∧ (Ex S (λw.ee y w ∧ True))).
+#S m x y E;
+napply (.=_1 #╪_1(∑ E (λw,H.(H ╪_1 #) ╪_1 #))).
+napply #.
+nqed.
+
+nlemma ex_setoid : ∀S:setoid.(S ⇒_1 CPROP) → setoid.
+#T P; @ (Ex T (λx:T.P x)); @;
+##[ #H1 H2; napply True |##*: //; ##]
+nqed.
+
+unification hint 0 ≔ T,P ; S ≟ (ex_setoid T P) ⊢
+ Ex T (λx:T.P x) ≡ carr S.
+
+nlemma test3 : ∀S:setoid. ∀ee: S ⇒_1 S ⇒_1 CPROP.
+ ∀x,y:setoid1_of_setoid S.x =_1 y →
+ ((Ex S (λw.ee x w ∧ True) ∨ True)) =_1 ((Ex S (λw.ee y w ∧ True) ∨ True)).
+#S m x y E;
+napply (.=_1 (∑ E (λw,H.(H ╪_1 #) ╪_1 #)) ╪_1 #).
+napply #.
+nqed.
+(* Ex setoid support end *)
+
+ndefinition L_pi_ext : ∀S:Alpha.∀r:pitem S.Elang S.
+#S r; @(𝐋\p r); #w1 w2 E; nelim r;
+##[ /2/;
+##| /2/;
+##| #x; @; *;
+##| #x; @; #H; nchange in H with ([?] =_0 ?); ##[ napply ((.=_0 H) E); ##]
+ napply ((.=_0 H) E^-1);
+##| #e1 e2 H1 H2;
+ nchange in match (w1 ∈ 𝐋\p (?·?)) with ((∃_.?)∨?);
+ nchange in match (w2 ∈ 𝐋\p (?·?)) with ((∃_.?)∨?);
+ napply (.= (#‡H2));
+ napply (.=_1 (∑ E (λx1,H1.∑ E (λx2,H2.?)))╪_1 #); ##[
+ ncut ((w1 = (x1@x2)) = (w2 = (x1@x2)));##[
+ @; #X; ##[ napply ((.= H1^-1) X) | napply ((.= H2) X) ] ##] #X;
+ napply ( (X‡#)‡#); ##]
+ napply #;
+##| #e1 e2 H1 H2;
+ nnormalize in ⊢ (???%%);
+ napply (H1‡H2);
+##| #e H; nnormalize in ⊢ (???%%);
+ napply (.=_1 (∑ E (λx1,H1.∑ E (λx2,H2.?)))); ##[
+ ncut ((w1 = (x1@x2)) = (w2 = (x1@x2)));##[
+ @; #X; ##[ napply ((.= H1^-1) X) | napply ((.= H2) X) ] ##] #X;
+ napply ((X‡#)‡#); ##]
+ napply #;##]
+nqed.
+
+unification hint 0 ≔ S : Alpha,e : pitem S;
+ SS ≟ (list S),
+ X ≟ (mk_ext_powerclass SS (𝐋\p e) (ext_prop SS (L_pi_ext S e)))
+(*-----------------------------------------------------------------*)⊢
+ ext_carr SS X ≡ 𝐋\p e.
+
+ndefinition epsilon ≝
+ λS:Alpha.λb.match b return λ_.lang S with [ true ⇒ { [ ] } | _ ⇒ ∅ ].
interpretation "epsilon" 'epsilon = (epsilon ?).
notation < "ϵ b" non associative with precedence 90 for @{'app_epsilon $b}.
interpretation "epsilon lang" 'app_epsilon b = (epsilon ? b).
-ndefinition in_prl ≝ λS : Alpha.λp:pre S. 𝐋\p\ (\fst p) ∪ ϵ (\snd p).
+ndefinition L_pr ≝ λS : Alpha.λp:pre S. 𝐋\p\ (\fst p) ∪ ϵ (\snd p).
-interpretation "in_prl mem" 'mem w l = (in_prl ? l w).
-interpretation "in_prl" 'in_pl E = (in_prl ? E).
-
-nlemma append_eq_nil : ∀S.∀w1,w2:word S. w1 @ w2 = [ ] → w1 = [ ].
-#S w1; nelim w1; //. #x tl IH w2; nnormalize; #abs; ndestruct; nqed.
+interpretation "L_pr" 'L_pi E = (L_pr ? E).
+nlemma append_eq_nil : ∀S:setoid.∀w1,w2:list S. [ ] = w1 @ w2 → w1 = [ ].
+#S w1; ncases w1; //. nqed.
+
(* lemma 12 *)
-nlemma epsilon_in_true : ∀S.∀e:pre S. [ ] ∈ e ↔ \snd e = true.
+nlemma epsilon_in_true : ∀S:Alpha.∀e:pre S. [ ] ∈ 𝐋\p e = (\snd e = true).
#S r; ncases r; #e b; @; ##[##2: #H; nrewrite > H; @2; /2/; ##] ncases b;//;
-nnormalize; *; ##[##2:*] nelim e;
-##[ ##1,2: *; ##| #c; *; ##| #c; nnormalize; #; ndestruct; ##| ##7: #p H;
-##| #r1 r2 H G; *; ##[##2: /3/ by or_intror]
-##| #r1 r2 H1 H2; *; /3/ by or_intror, or_introl; ##]
-*; #w1; *; #w2; *; *; #defw1; nrewrite > (append_eq_nil … w1 w2 …); /3/ by {};//;
+*; ##[##2:*] nelim e;
+##[ ##1,2: *; ##| #c; *; ##| #c; *| ##7: #p H;
+##| #r1 r2 H G; *; ##[##2: nassumption; ##]
+##| #r1 r2 H1 H2; *; /2/ by {}]
+*; #w1; *; #w2; *; *;
+##[ #defw1 H1 foo; napply H;
+ napply (. (append_eq_nil ? ?? defw1)^-1╪_1#);
+ nassumption;
+##| #defw1 H1 foo; napply H;
+ napply (. (append_eq_nil ? ?? defw1)^-1╪_1#);
+ nassumption;
+##]
nqed.
-nlemma not_epsilon_lp : ∀S.∀e:pitem S. ¬ (𝐋\p e [ ]).
-#S e; nelim e; nnormalize; /2/ by nmk;
-##[ #; @; #; ndestruct;
-##| #r1 r2 n1 n2; @; *; /2/; *; #w1; *; #w2; *; *; #H;
- nrewrite > (append_eq_nil …H…); /2/;
-##| #r1 r2 n1 n2; @; *; /2/;
-##| #r n; @; *; #w1; *; #w2; *; *; #H;
- nrewrite > (append_eq_nil …H…); /2/;##]
+nlemma not_epsilon_lp : ∀S:Alpha.∀e:pitem S. ¬ ([ ] ∈ (𝐋\p e)).
+#S e; nelim e; ##[##1,2,3,4: nnormalize;/2/]
+##[ #p1 p2 np1 np2; *; ##[##2: napply np2] *; #w1; *; #w2; *; *; #abs;
+ nlapply (append_eq_nil ??? abs); # defw1; #; napply np1;
+ napply (. defw1^-1╪_1#);
+ nassumption;
+##| #p1 p2 np1 np2; *; nchange with (¬?); //;
+##| #r n; *; #w1; *; #w2; *; *; #abs; #; napply n;
+ nlapply (append_eq_nil ??? abs); # defw1; #;
+ napply (. defw1^-1╪_1#);
+ nassumption;##]
nqed.
ndefinition lo ≝ λS:Alpha.λa,b:pre S.〈\fst a + \fst b,\snd a || \snd b〉.
notation < "a \sup ⊛" non associative with precedence 90 for @{'lk $op $a}.
interpretation "lk" 'lk op a = (lk ? op a).
-notation > "a^⊛" non associative with precedence 90 for @{'lk eclose $a}.
+notation > "a ^ ⊛" non associative with precedence 75 for @{'lk eclose $a}.
notation > "•" non associative with precedence 60 for @{eclose ?}.
nlet rec eclose (S: Alpha) (E: pitem S) on E : pre S ≝
match E with
- [ pz ⇒ 〈 ∅, false 〉
+ [ pz ⇒ 〈 0, false 〉
| pe ⇒ 〈 ϵ, true 〉
| ps x ⇒ 〈 `.x, false 〉
| pp x ⇒ 〈 `.x, false 〉
ndefinition reclose ≝ λS:Alpha.λp:pre S.let p' ≝ •\fst p in 〈\fst p',\snd p || \snd p'〉.
interpretation "reclose" 'eclose x = (reclose ? x).
-ndefinition eq_f1 ≝ λS.λa,b:word S → Prop.∀w.a w ↔ b w.
-notation > "A =1 B" non associative with precedence 45 for @{'eq_f1 $A $B}.
-notation "A =\sub 1 B" non associative with precedence 45 for @{'eq_f1 $A $B}.
-interpretation "eq f1" 'eq_f1 a b = (eq_f1 ? a b).
-
-naxiom extP : ∀S.∀p,q:word S → Prop.(p =1 q) → p = q.
-
nlemma epsilon_or : ∀S:Alpha.∀b1,b2. ϵ(b1 || b2) = ϵ b1 ∪ ϵ b2. ##[##2: napply S]
-#S b1 b2; ncases b1; ncases b2; napply extP; #w; nnormalize; @; /2/; *; //; *;
+#S b1 b2; ncases b1; ncases b2;
+nchange in match (true || true) with true;
+nchange in match (true || false) with true;
+nchange in match (ϵ true) with {[]};
+nchange in match (ϵ false) with ∅;
+##[##1,4: napply ((cupID…)^-1);
+##| napply ((cup0 ? {[]})^-1);
+##| napply (.= (cup0 ? {[]})^-1); napply cupC; ##]
nqed.
-nlemma cupA : ∀S.∀a,b,c:word S → Prop.a ∪ b ∪ c = a ∪ (b ∪ c).
-#S a b c; napply extP; #w; nnormalize; @; *; /3/; *; /3/; nqed.
+(* XXX move somewere else *)
+ndefinition if': ∀A,B:CPROP. A = B → A → B.
+#A B; *; /2/. nqed.
-nlemma cupC : ∀S. ∀a,b:word S → Prop.a ∪ b = b ∪ a.
-#S a b; napply extP; #w; @; *; nnormalize; /2/; nqed.
+ncoercion if : ∀A,B:CPROP. ∀p:A = B. A → B ≝ if' on _p : eq_rel1 ???? to ∀_:?.?.
(* theorem 16: 2 *)
nlemma oplus_cup : ∀S:Alpha.∀e1,e2:pre S.𝐋\p (e1 ⊕ e2) = 𝐋\p e1 ∪ 𝐋\p e2.
#S r1; ncases r1; #e1 b1 r2; ncases r2; #e2 b2;
-nwhd in ⊢ (??(??%)?);
-nchange in ⊢(??%?) with (𝐋\p (e1 + e2) ∪ ϵ (b1 || b2));
-nchange in ⊢(??(??%?)?) with (𝐋\p (e1) ∪ 𝐋\p (e2));
-nrewrite > (epsilon_or S …); nrewrite > (cupA S (𝐋\p e1) …);
-nrewrite > (cupC ? (ϵ b1) …); nrewrite < (cupA S (𝐋\p e2) …);
-nrewrite > (cupC ? ? (ϵ b1) …); nrewrite < (cupA …); //;
+nwhd in ⊢ (???(??%)?);
+nchange in ⊢(???%?) with (𝐋\p (e1 + e2) ∪ ϵ (b1 || b2));
+nchange in ⊢(???(??%?)?) with (𝐋\p (e1) ∪ 𝐋\p (e2));
+napply (.=_1 #╪_1 (epsilon_or ???));
+napply (.=_1 (cupA…)^-1);
+napply (.=_1 (cupA…)╪_1#);
+napply (.=_1 (#╪_1(cupC…))╪_1#);
+napply (.=_1 (cupA…)^-1╪_1#);
+napply (.=_1 (cupA…));
+//;
nqed.
+FINQUI
+
+manca setoide per pair (e pre)
+
nlemma odotEt :
- ∀S.∀e1,e2:pitem S.∀b2. 〈e1,true〉 ⊙ 〈e2,b2〉 = 〈e1 · \fst (•e2),b2 || \snd (•e2)〉.
+ ∀S:Alpha.∀e1,e2:pitem S.∀b2. 〈e1,true〉 ⊙ 〈e2,b2〉 = ?.〈e1 · \fst (•e2),b2 || \snd (•e2)〉.
#S e1 e2 b2; nnormalize; ncases (•e2); //; nqed.
nlemma LcatE : ∀S.∀e1,e2:pitem S.𝐋\p (e1 · e2) = 𝐋\p e1 · 𝐋 .|e2| ∪ 𝐋\p e2. //; nqed.
-nlemma cup_dotD : ∀S.∀p,q,r:word S → Prop.(p ∪ q) · r = (p · r) ∪ (q · r).
+nlemma cup_dotD : ∀S.∀p,q,r:lang S.(p ∪ q) · r = (p · r) ∪ (q · r).
#S p q r; napply extP; #w; nnormalize; @;
##[ *; #x; *; #y; *; *; #defw; *; /7/ by or_introl, or_intror, ex_intro, conj;
##| *; *; #x; *; #y; *; *; /7/ by or_introl, or_intror, ex_intro, conj; ##]
nqed.
-nlemma cup0 :∀S.∀p:word S → Prop.p ∪ {} = p.
-#S p; napply extP; #w; nnormalize; @; /2/; *; //; *; nqed.
nlemma erase_dot : ∀S.∀e1,e2:pitem S.𝐋 .|e1 · e2| = 𝐋 .|e1| · 𝐋 .|e2|.
#S e1 e2; napply extP; nnormalize; #w; @; *; #w1; *; #w2; *; *; /7/ by ex_intro, conj;
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