fixed coercions

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

diff --git a/helm/matita/contribs/PREDICATIVE-TOPOLOGY/coa_props.ma b/helm/matita/contribs/PREDICATIVE-TOPOLOGY/coa_props.ma
index 47fd8ab6191797127778025c41375ecb923b5d71..6c004073e7390e4c2fe172cb105316be13911763 100644 (file)
--- a/helm/matita/contribs/PREDICATIVE-TOPOLOGY/coa_props.ma
+++ b/helm/matita/contribs/PREDICATIVE-TOPOLOGY/coa_props.ma
@@ -16,10 +16,13 @@ set "baseuri" "cic:/matita/PREDICATIVE-TOPOLOGY/coa_props".
 
 include "coa_defs.ma".
 
-coercion Type_of_COA. (* this should be generated by the following line *)
-coercion coa. (* this should be inside coa_defs.moo but it isn't *)
+inductive True:Prop \def T:True.
 
-theorem zero_le: \forall (P:COA). \forall (p:P). le ? (zero P) p.
+theorem zero_le: 
+  \forall (P:COA). \forall (p:P). (le ? (zero P) p) \to True.
+  intros.
+  exact T.
+qed.