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diff --git a/helm/gTopLevel/esempi/sets.cic b/helm/gTopLevel/esempi/sets.cic
deleted file mode 100644
index 156e231a2..000000000
--- a/helm/gTopLevel/esempi/sets.cic
+++ /dev/null
@@ -1,15 +0,0 @@
-Open:
-/Coq/Sets/Powerset_facts/Sets_as_an_algebra/Union_commutative.con
-
-We prove the conjunction again:
-
-alias Ensemble /Coq/Sets/Ensembles/Ensembles/Ensemble.con
-alias Union    /Coq/Sets/Ensembles/Ensembles/Union.ind#1/1
-alias Included /Coq/Sets/Ensembles/Ensembles/Included.con
-alias and      /Coq/Init/Logic/Conjunction/and.ind#1/1
-
-The two parts of the conjunction can be proved in the same way. So we
-can make a Cut:
-
-!V:Set.!C:(Ensemble V).!D:(Ensemble V).(Included V (Union V C D)
-(Union V D C))