X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fdama%2Fconstructive_connectives.ma;h=2cf0d8d58b8d7ba389d10c67421fa2be0b785008;hb=dbf2689a206bb4f7a3b36f6e40a88a47c8ad6e09;hp=a0fb66dedf2fd671eacb057796976e5a41b7dd07;hpb=c6b621c1df5abd9a8a1567991379768c435607dd;p=helm.git

diff --git a/helm/software/matita/dama/constructive_connectives.ma b/helm/software/matita/dama/constructive_connectives.ma
index a0fb66ded..2cf0d8d58 100644
--- a/helm/software/matita/dama/constructive_connectives.ma
+++ b/helm/software/matita/dama/constructive_connectives.ma
@@ -14,14 +14,20 @@
 
 set "baseuri" "cic:/matita/constructive_connectives/".
 
-inductive or (A,B:Type) : Type \def
-   Left : A → or A B
- | Right : B → or A B.
+inductive Or (A,B:Type) : Type ≝
+   Left : A → Or A B
+ | Right : B → Or A B.
 
 interpretation "constructive or" 'or x y =
-  (cic:/matita/constructive_connectives/or.ind#xpointer(1/1) x y).
+  (cic:/matita/constructive_connectives/Or.ind#xpointer(1/1) x y).
 
-inductive ex (A:Type) (P:A→Prop) : Type \def
+inductive And (A,B:Type) : Type ≝
+ | Conj : A → B → And A B.
+ 
+interpretation "constructive and" 'and x y =
+  (cic:/matita/constructive_connectives/And.ind#xpointer(1/1) x y).
+
+inductive ex (A:Type) (P:A→Prop) : Type ≝
   ex_intro: ∀w:A. P w → ex A P.
 
 notation < "hvbox(Σ ident i opt (: ty) break . p)"
@@ -32,3 +38,9 @@ for @{ 'sigma ${default
 
 interpretation "constructive exists" 'sigma \eta.x =
   (cic:/matita/constructive_connectives/ex.ind#xpointer(1/1) _ x).
+
+alias id "False" = "cic:/matita/logic/connectives/False.ind#xpointer(1/1)".
+definition Not ≝ λx:Type.x → False.
+
+interpretation "constructive not" 'not x = 
+  (cic:/matita/constructive_connectives/Not.con x).
\ No newline at end of file