the decentralization of core notation continues ...

[helm.git] / matita / matita / lib / basics / sets.ma

diff --git a/matita/matita/lib/basics/sets.ma b/matita/matita/lib/basics/sets.ma
index 2f570c18feb503e1da38186bf9455a8c0b9e1018..8e40b666bfdee2eb318478d2899a3bece809619f 100644 (file)
--- a/matita/matita/lib/basics/sets.ma
+++ b/matita/matita/lib/basics/sets.ma
@@ -11,6 +11,7 @@
 
 include "basics/logic.ma".
 include "basics/core_notation/singl_1.ma".
+include "basics/core_notation/subseteq_2.ma".
 
 (**** a subset of A is just an object of type A→Prop ****)