X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fformal_topology%2Foverlap%2Fconcrete_spaces.ma;h=791af46b3431b63992ab482889077ca5d0dfeb71;hb=5f7dd050c5797ef12608feb26259d2dd9ef4bb38;hp=46e5378649a169845fdb74a3d79de5e14eda65d4;hpb=f4b80554953fa5c452fdc9350d236fb9bcb263dd;p=helm.git

diff --git a/helm/software/matita/contribs/formal_topology/overlap/concrete_spaces.ma b/helm/software/matita/contribs/formal_topology/overlap/concrete_spaces.ma
index 46e537864..791af46b3 100644
--- a/helm/software/matita/contribs/formal_topology/overlap/concrete_spaces.ma
+++ b/helm/software/matita/contribs/formal_topology/overlap/concrete_spaces.ma
@@ -18,7 +18,7 @@ include "basic_pairs.ma".
    (confondendola con la coercion per gli oggetti di SET *)
 record concrete_space : Type1 ≝
  { bp:> BP;
-   converges: ∀a: carr1 (concr bp).∀U,V: carr1 (form bp). a ⊩ U → a ⊩ V → a ⊩_bp (U ↓ V);
+   converges: ∀a: carr1 (concr bp).∀U,V: carr1 (form bp). a ⊩ U → a ⊩ V → a ⊩ (U ↓ V);
    all_covered: ∀x: carr1 (concr bp). x ⊩ form bp
  }.