X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_kernel%2FnCicTypeChecker.mli;h=c57055365dc72def70dcbfd3683e63f32f6d52ca;hb=3f14041310efe95e436bea8efd51ebdab67d5def;hp=3cd11c0f8fa78744e1fc5eee50c4c6c1bdf081e5;hpb=c22f39a5d5afc0ef55beb221e00e2e6703b13d90;p=helm.git

diff --git a/helm/software/components/ng_kernel/nCicTypeChecker.mli b/helm/software/components/ng_kernel/nCicTypeChecker.mli
index 3cd11c0f8..c57055365 100644
--- a/helm/software/components/ng_kernel/nCicTypeChecker.mli
+++ b/helm/software/components/ng_kernel/nCicTypeChecker.mli
@@ -59,3 +59,7 @@ val debruijn:
 val are_all_occurrences_positive: 
  subst:NCic.substitution ->
   NCic.context -> NUri.uri -> int -> int -> int -> int -> NCic.term -> bool
+
+val does_not_occur :
+    subst:NCic.substitution ->
+    ('a * NCic.context_entry) list -> int -> int -> NCic.term -> bool