decentralizing core notation

[helm.git] / matita / matita / lib / formal_topology / o-algebra.ma

diff --git a/matita/matita/lib/formal_topology/o-algebra.ma b/matita/matita/lib/formal_topology/o-algebra.ma
index 70473755095490011616866e83c78f411fc36a22..61a784605dfbaec75c5254a6e6fa1463bcc466c0 100644 (file)
--- a/matita/matita/lib/formal_topology/o-algebra.ma
+++ b/matita/matita/lib/formal_topology/o-algebra.ma
@@ -12,6 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "basics/core_notation/comprehension_2.ma".
 include "formal_topology/categories.ma".
 (*
 inductive bool : Type[0] := true : bool | false : bool.