decentralizing core notation

[helm.git] / matita / matita / lib / formal_topology / subsets.ma

diff --git a/matita/matita/lib/formal_topology/subsets.ma b/matita/matita/lib/formal_topology/subsets.ma
index 5cb8455a07b80d5df624ba5728d0c5792982968d..56c2c895cbb98d2495b099e88c919792481075d2 100644 (file)
--- a/matita/matita/lib/formal_topology/subsets.ma
+++ b/matita/matita/lib/formal_topology/subsets.ma
@@ -13,6 +13,8 @@
 (**************************************************************************)
 
 include "formal_topology/categories.ma".
+include "basics/core_notation/singl_1.ma".
+include "basics/core_notation/subset_1.ma".
 (*
 record powerset_carrier (A: objs1 SET) : Type[1] ≝ { mem_operator: A ⇒_1 CPROP }.
 interpretation "powerset low" 'powerset A = (powerset_carrier A).