X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fformal_topology%2Foverlap%2Fbasic_topologies_to_o-basic_topologies.ma;h=bea3207b6021c35904f57f255a79a01f249ba6d5;hb=05cfeb82d2624860e66941421a937f308d66cf33;hp=f00abe8f4c74000c340b14a02680533c2cfe0595;hpb=95ac064b854f31a49f2f8cd3c4b4f4929dc96fc0;p=helm.git

diff --git a/helm/software/matita/contribs/formal_topology/overlap/basic_topologies_to_o-basic_topologies.ma b/helm/software/matita/contribs/formal_topology/overlap/basic_topologies_to_o-basic_topologies.ma
index f00abe8f4..bea3207b6 100644
--- a/helm/software/matita/contribs/formal_topology/overlap/basic_topologies_to_o-basic_topologies.ma
+++ b/helm/software/matita/contribs/formal_topology/overlap/basic_topologies_to_o-basic_topologies.ma
@@ -27,4 +27,61 @@ definition o_continuous_relation_of_continuous_relation:
   Ocontinuous_relation (o_basic_topology_of_basic_topology BT1) (o_basic_topology_of_basic_topology BT2).
  intros (BT1 BT2 c); constructor 1;
   [ apply (orelation_of_relation ?? c) | apply (reduced ?? c) | apply (saturated ?? c) ]
+qed.
+
+axiom daemon: False.
+
+lemma o_continuous_relation_of_continuous_relation_morphism :
+  ∀S,T:category2_of_category1 BTop.
+  unary_morphism2 (arrows2 (category2_of_category1 BTop) S T)
+   (arrows2 OBTop (o_basic_topology_of_basic_topology S) (o_basic_topology_of_basic_topology T)).
+intros (S T);
+   constructor 1;
+     [ apply (o_continuous_relation_of_continuous_relation S T);
+     | cases daemon (*apply (o_relation_pair_of_relation_pair_is_morphism S T)*)]
+qed.
+
+definition BTop_to_OBTop: carr3 (arrows3 CAT2 (category2_of_category1 BTop) OBTop).
+ constructor 1;
+  [ apply o_basic_topology_of_basic_topology;
+  | intros; apply o_continuous_relation_of_continuous_relation_morphism;
+  | cases daemon (*apply o_relation_topology_of_relation_topology_morphism_respects_id*);
+  | cases daemon (*apply o_relation_topology_of_relation_topology_morphism_respects_comp*);]
+qed.
+
+(*
+alias symbol "eq" (instance 2) = "setoid1 eq".
+alias symbol "eq" (instance 1) = "setoid2 eq".
+theorem BTop_to_OBTop_faithful:
+ ∀S,T.∀f,g:arrows2 (category2_of_category1 BTop) S T.
+  map_arrows2 ?? BTop_to_OBTop ?? f = map_arrows2 ?? BTop_to_OBTop ?? g → f=g.
+ intros; change with (∀b.A ? (ext ?? f b) = A ? (ext ?? g b));
+ apply (POW_faithful);
+ apply (.= respects_comp2 ?? POW (concr S) (concr T) (form T) f \sub \c (⊩ \sub T));
+ apply sym2;
+ apply (.= respects_comp2 ?? POW (concr S) (concr T) (form T) g \sub \c (⊩ \sub T));
+ apply sym2;
+ apply e;
+qed.
+*)
+
+include "notation.ma".
+
+theorem BTop_to_OBTop_full: 
+   ∀S,T.∀f. exT22 ? (λg. map_arrows2 ?? BTop_to_OBTop S T g = f).
+ intros;
+ cases (POW_full (carrbt S) (carrbt T) (Ocont_rel ?? f)) (g Hg);
+ exists[
+   constructor 1;
+    [ apply g
+    | apply hide; intros; lapply (Oreduced ?? f ? e);
+      cases Hg; lapply (e3 U) as K; apply (.= K);
+      apply (.= Hletin); apply rule (†(K^-1));
+    | apply hide; intros; lapply (Osaturated ?? f ? e);
+      cases Hg; lapply (e1 U) as K; apply (.= K);
+      apply (.= Hletin); apply rule (†(K^-1));
+    ]
+ | simplify; unfold BTop_to_OBTop; simplify;
+   unfold o_continuous_relation_of_continuous_relation_morphism; simplify;
+   cases Hg; whd; simplify; intro; 
 qed.
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