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[helm.git] / helm / software / matita / nlibrary / sets / setoids1.ma

diff --git a/helm/software/matita/nlibrary/sets/setoids1.ma b/helm/software/matita/nlibrary/sets/setoids1.ma
index 49d259d5dd46ddb0d7efff2f0bf532794d8589df..fb960c1db0b7599af5ca9e4417b7fe08a027ba59 100644 (file)
--- a/helm/software/matita/nlibrary/sets/setoids1.ma
+++ b/helm/software/matita/nlibrary/sets/setoids1.ma
@@ -25,7 +25,7 @@ ndefinition setoid1_of_setoid: setoid → setoid1.
  #s; napply mk_setoid1
   [ napply (carr s)
   | napply (mk_equivalence_relation1 s)
-    [ napply eq
+    [ napply eq0
     | napply refl
     | napply sym
     | napply trans]##]
@@ -36,47 +36,59 @@ nqed.
 (*prefer coercion Type_OF_setoid.*)
 
 interpretation "setoid1 eq" 'eq t x y = (eq_rel1 ? (eq1 t) x y).
-interpretation "setoid eq" 'eq t x y = (eq_rel ? (eq t) x y).
+interpretation "setoid eq" 'eq t x y = (eq_rel ? (eq0 t) x y).
 
 notation > "hvbox(a break =_12 b)" non associative with precedence 45
 for @{ eq_rel2 (carr2 (setoid2_of_setoid1 ?)) (eq2 (setoid2_of_setoid1 ?)) $a $b }.
 notation > "hvbox(a break =_0 b)" non associative with precedence 45
-for @{ eq_rel ? (eq ?) $a $b }.
+for @{ eq_rel ? (eq0 ?) $a $b }.
 notation > "hvbox(a break =_1 b)" non associative with precedence 45
 for @{ eq_rel1 ? (eq1 ?) $a $b }.
 
 interpretation "setoid1 symmetry" 'invert r = (sym1 ???? r).
 interpretation "setoid symmetry" 'invert r = (sym ???? r).
 notation ".= r" with precedence 50 for @{'trans $r}.
+notation ".=_1 r" with precedence 50 for @{'trans_x1 $r}.
 interpretation "trans1" 'trans r = (trans1 ????? r).
 interpretation "trans" 'trans r = (trans ????? r).
+interpretation "trans1_x1" 'trans_x1 r = (trans1 ????? r).
 
 nrecord unary_morphism1 (A,B: setoid1) : Type[1] ≝
  { fun11:1> A → B;
    prop11: ∀a,a'. eq1 ? a a' → eq1 ? (fun11 a) (fun11 a')
  }.
-
-nrecord binary_morphism1 (A,B,C:setoid1) : Type[1] ≝
- { fun21:2> A → B → C;
-   prop21: ∀a,a',b,b'. eq1 ? a a' → eq1 ? b b' → eq1 ? (fun21 a b) (fun21 a' b')
- }.
-
+ 
+notation "┼_1 c" with precedence 89 for @{'prop1_x1 $c }.
 interpretation "prop11" 'prop1 c = (prop11 ????? c).
-interpretation "prop21" 'prop2 l r = (prop21 ???????? l r).
+interpretation "prop11_x1" 'prop1_x1 c = (prop11 ????? c).
 interpretation "refl1" 'refl = (refl1 ???).
 
 ndefinition unary_morphism1_setoid1: setoid1 → setoid1 → setoid1.
  #s; #s1; @ (unary_morphism1 s s1); @
-     [ #f; #g; napply (∀a:s. f a = g a)
-     | #x; #a; napply refl1
-     | #x; #y; #H; #a; napply sym1; //
-     | #x; #y; #z; #H1; #H2; #a; napply trans1; ##[##2: napply H1 | ##skip | napply H2]##]
+     [ #f; #g; napply (∀a,a':s. a=a' → f a = g a')
+     | #x; #a; #a'; #Ha; napply (.= †Ha); napply refl1
+     | #x; #y; #H; #a; #a'; #Ha; napply (.= †Ha); napply sym1; /2/
+     | #x; #y; #z; #H1; #H2; #a; #a'; #Ha; napply (.= †Ha); napply trans1; ##[##2: napply H1 | ##skip | napply H2]//;##]
 nqed.
 
 unification hint 0 ≔ S, T ;
  R ≟ (unary_morphism1_setoid1 S T)
 (* --------------------------------- *) ⊢
    carr1 R ≡ unary_morphism1 S T.
+   
+notation "l ╪_1 r" with precedence 89 for @{'prop2_x1 $l $r }.
+interpretation "prop21" 'prop2 l r = (prop11 ? (unary_morphism1_setoid1 ??) ? ?? l ?? r).
+interpretation "prop21_x1" 'prop2_x1 l r = (prop11 ? (unary_morphism1_setoid1 ??) ? ?? l ?? r).
+
+nlemma unary_morph1_eq1: ∀A,B.∀f,g: unary_morphism1 A B. (∀x. f x = g x) → f=g.
+/3/. nqed.
+
+nlemma mk_binary_morphism1:
+ ∀A,B,C: setoid1. ∀f: A → B → C. (∀a,a',b,b'. a=a' → b=b' → f a b = f a' b') →
+  unary_morphism1 A (unary_morphism1_setoid1 B C).
+ #A; #B; #C; #f; #H; @ [ #x; @ (f x) ] #a; #a'; #Ha [##2: napply unary_morph1_eq1; #y]
+ /2/.
+nqed.
 
 ndefinition composition1 ≝
  λo1,o2,o3:Type[1].λf:o2 → o3.λg: o1 → o2.λx.f (g x).
@@ -98,12 +110,11 @@ unification hint 0 ≔ o1,o2,o3:setoid1,f:unary_morphism1 o2 o3,g:unary_morphism
  (* -------------------------------------------------------------------- *) ⊢
                               fun11 ?? R ≡ (composition1 … f g).
                               
-ndefinition comp_binary_morphisms:
+ndefinition comp1_binary_morphisms:
  ∀o1,o2,o3.
-  binary_morphism1 (unary_morphism1_setoid1 o2 o3) (unary_morphism1_setoid1 o1 o2)
-   (unary_morphism1_setoid1 o1 o3).
-#o1; #o2; #o3; @
+  unary_morphism1 (unary_morphism1_setoid1 o2 o3)
+   (unary_morphism1_setoid1 (unary_morphism1_setoid1 o1 o2) (unary_morphism1_setoid1 o1 o3)).
+#o1; #o2; #o3; napply mk_binary_morphism1
  [ #f; #g; napply (comp1_unary_morphisms … f g) (*CSC: why not ∘?*)
- | #a; #a'; #b; #b'; #ea; #eb; #x; nnormalize;
-   napply (.= †(eb x)); napply ea.
+ | #a; #a'; #b; #b'; #ea; #eb; #x; #x'; #Hx; nnormalize; /3/ ]
 nqed.