More notation here and there: \sup, \divides, \ndivides, !

[helm.git] / helm / matita / library / logic / connectives.ma

diff --git a/helm/matita/library/logic/connectives.ma b/helm/matita/library/logic/connectives.ma
index 15b1cfe10d59a44ccf2e28a7476c72e8d7d61392..a8cba2b4a394f15584f779fc7749d713a94ad694 100644 (file)
--- a/helm/matita/library/logic/connectives.ma
+++ b/helm/matita/library/logic/connectives.ma
@@ -57,7 +57,7 @@ inductive Or (A,B:Prop) : Prop \def
 interpretation "logical or" 'or x y =
   (cic:/matita/logic/connectives/Or.ind#xpointer(1/1) x y).
    
-definition decidable : Prop \to Prop \def \lambda A:Prop. A \lor \not A.
+definition decidable : Prop \to Prop \def \lambda A:Prop. A \lor \lnot A.
 
 inductive ex (A:Type) (P:A \to Prop) : Prop \def
     ex_intro: \forall x:A. P x \to ex A P.