X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Flib%2Fformal_topology%2Frelations.ma;h=3516999008aa714be19b99bf19b068dc585881dc;hb=600fba840c748f67593838673a6eb40eab9b68e5;hp=2ad35655e51756a1ceceda01182f1c126b0100f2;hpb=c8718cc46ab9aaca047366dfefe72bc7c9402e5a;p=helm.git

diff --git a/matita/matita/lib/formal_topology/relations.ma b/matita/matita/lib/formal_topology/relations.ma
index 2ad35655e..351699900 100644
--- a/matita/matita/lib/formal_topology/relations.ma
+++ b/matita/matita/lib/formal_topology/relations.ma
@@ -12,8 +12,9 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "basics/core_notation/comprehension_2.ma".
 include "formal_topology/subsets.ma".
-
+(*
 record binary_relation (A,B: SET) : Type[1] ≝
  { satisfy:> binary_morphism1 A B CPROP }.
 
@@ -323,4 +324,5 @@ theorem extS_singleton:
  intros; unfold extS; unfold ext; unfold singleton; simplify;
  split; intros 2; simplify; simplify in f; 
  [ cases f; cases e; cases x1; change in f2 with (x =_1 w); apply (. #‡f2); assumption;
- | split; try apply I; exists [apply x] split; try assumption; change with (x = x); apply rule #;] qed.
\ No newline at end of file
+ | split; try apply I; exists [apply x] split; try assumption; change with (x = x); apply rule #;] qed.
+*)