added notation for nleq, nlgt, ...

[helm.git] / helm / matita / library / Z / orders.ma

diff --git a/helm/matita/library/Z/orders.ma b/helm/matita/library/Z/orders.ma
index ec1d6fb525f8a270f6058ebfba7f13118ee44fc9..f97c47eba0c16c3442874145446bafd19f720fdf 100644 (file)
--- a/helm/matita/library/Z/orders.ma
+++ b/helm/matita/library/Z/orders.ma
@@ -38,6 +38,9 @@ definition Zle : Z \to Z \to Prop \def
 
 (*CSC: the URI must disappear: there is a bug now *)
 interpretation "integer 'less or equal to'" 'leq x y = (cic:/matita/Z/orders/Zle.con x y).
+(*CSC: the URI must disappear: there is a bug now *)
+interpretation "integer 'neither less nor equal to'" 'nleq x y =
+  (cic:/matita/logic/connectives/Not.con (cic:/matita/Z/orders/Zle.con x y)).
 
 definition Zlt : Z \to Z \to Prop \def
 \lambda x,y:Z.
@@ -60,6 +63,9 @@ definition Zlt : Z \to Z \to Prop \def
     
 (*CSC: the URI must disappear: there is a bug now *)
 interpretation "integer 'less than'" 'lt x y = (cic:/matita/Z/orders/Zlt.con x y).
+(*CSC: the URI must disappear: there is a bug now *)
+interpretation "integer 'not less than'" 'nless x y =
+  (cic:/matita/logic/connectives/Not.con (cic:/matita/Z/orders/Zlt.con x y)).
 
 theorem irreflexive_Zlt: irreflexive Z Zlt.
 change with \forall x:Z. x < x \to False.