X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fformal_topology%2Foverlap%2Fbasic_topologies_to_o-basic_topologies.ma;h=ee9682cecd605dfc1047a2b459e2a3425b6f7883;hb=d4cd2564126b15d4f0aa736353d25dfc34d2cad8;hp=6b6469f271e72380c0fb08bdfddd6322737ff051;hpb=887916a4791bba656b1dec730d3315239d3c1f21;p=helm.git

diff --git a/helm/software/matita/contribs/formal_topology/overlap/basic_topologies_to_o-basic_topologies.ma b/helm/software/matita/contribs/formal_topology/overlap/basic_topologies_to_o-basic_topologies.ma
index 6b6469f27..ee9682cec 100644
--- a/helm/software/matita/contribs/formal_topology/overlap/basic_topologies_to_o-basic_topologies.ma
+++ b/helm/software/matita/contribs/formal_topology/overlap/basic_topologies_to_o-basic_topologies.ma
@@ -19,7 +19,7 @@ include "relations_to_o-algebra.ma".
 definition o_basic_topology_of_basic_topology: cic:/matita/formal_topology/basic_topologies/basic_topology.ind#xpointer(1/1) → basic_topology.
  intro;
  constructor 1;
-  [ apply (SUBSETS b);
+  [ apply (POW' b);
   | apply (A b);
   | apply (J b);
   | apply (A_is_saturation b);