cle introduced; ceq fixed

[helm.git] / helm / matita / contribs / PREDICATIVE-TOPOLOGY / coa_defs.ma

diff --git a/helm/matita/contribs/PREDICATIVE-TOPOLOGY/coa_defs.ma b/helm/matita/contribs/PREDICATIVE-TOPOLOGY/coa_defs.ma
index ab8d4d9cfd0ed78ea20c3c364bcdb53c4f904345..c840fbdaf7cddc972b4f3cdade571c5b2aa84dd4 100644 (file)
--- a/helm/matita/contribs/PREDICATIVE-TOPOLOGY/coa_defs.ma
+++ b/helm/matita/contribs/PREDICATIVE-TOPOLOGY/coa_defs.ma
@@ -21,7 +21,7 @@ include "domain_data.ma".
 *)
 
 record COA: Type \def {
-   coa:> Class;                                   (* carrier *)
+   coa:> Class;                                  (* carrier *)
         le: coa \to coa \to Prop;                     (* inclusion *)
         ov: coa \to coa \to Prop;                     (* overlap *)
         sup: \forall (D:Domain). (D \to coa) \to coa; (* supremum *)
@@ -54,4 +54,8 @@ definition bsup: \forall (P:COA). P \to P \to P \def
    inf_ov: forall p q, ov p q -> ov p (inf QDBool (bool_family _ p q))
         properness: ov zero zero -> False;
         distributivity: forall I p q, id _ (inf QDBool (bool_family _ (sup I p) q)) (sup I (fun i => (inf QDBool (bool_family _ (p i) q))));
-*)
\ No newline at end of file
+*)
+
+inductive pippo : Prop \def
+   | Pippo: let x \def zero in zero = x \to pippo.
+   
\ No newline at end of file