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[helm.git] / helm / software / matita / nlibrary / logic / connectives.ma

diff --git a/helm/software/matita/nlibrary/logic/connectives.ma b/helm/software/matita/nlibrary/logic/connectives.ma
index aca4af44980890a67df317318d6c653c240a652c..02002dc834a31081c97b26c30cbeb5102ae2f7fe 100644 (file)
--- a/helm/software/matita/nlibrary/logic/connectives.ma
+++ b/helm/software/matita/nlibrary/logic/connectives.ma
@@ -35,8 +35,7 @@ ninductive Or (A,B:CProp) : CProp ≝
 
 interpretation "logical or" 'or x y = (Or x y).
 
-(* BUG HERE: WHY IS IT ACCEPTED??? *)
-inductive Ex (A:Type[1]) (P:A \to CProp[1]) : CProp[0] \def
-    ex_intro: \forall x:A. P x \to Ex A P.
+ninductive Ex (A:Type) (P:A → CProp) : CProp ≝
+    ex_intro: ∀x:A. P x → Ex A P.
 
 interpretation "exists" 'exists x = (Ex ? x).
\ No newline at end of file