X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_paramodulation%2Fterms.ml;h=9b374a8a5f4acbbbf6c57d5cae9c5b5d23b4b57f;hb=6b0a195b180e3526af7b55771b2df7b10acd7c30;hp=91ca56271404a9e9ccb2cd9df6ee37fa99e8a81b;hpb=ddd751449e73a22af523ce78ce1d8f0bb211e941;p=helm.git

diff --git a/helm/software/components/ng_paramodulation/terms.ml b/helm/software/components/ng_paramodulation/terms.ml
index 91ca56271..9b374a8a5 100644
--- a/helm/software/components/ng_paramodulation/terms.ml
+++ b/helm/software/components/ng_paramodulation/terms.ml
@@ -18,14 +18,14 @@ type 'a foterm =
 
 type 'a substitution = (int * 'a foterm) list
 
-type comparison = Lt | Le | Eq | Ge | Gt | Incomparable
+type comparison = Lt | Eq | Gt | Incomparable
 
 type rule = SuperpositionRight | SuperpositionLeft | Demodulation
 type direction = Left2Right | Right2Left | Nodir
 type position = int list
 
 type 'a proof =
-  | Exact of 'a
+  | Exact of 'a foterm
   | Step of rule * int * int * direction * position * 'a substitution
          (* rule, eq1, eq2, direction of eq2, position, substitution *)
 
@@ -57,3 +57,15 @@ module M : Map.S with type key = int
   = Map.Make(OT) 
 
 type 'a bag = 'a unit_clause M.t
+
+module type Blob =
+  sig
+    type t
+    val eq : t -> t -> bool
+    val compare : t -> t -> int
+    val is_eq_predicate : t -> bool
+    val pp : t -> string
+    val embed : t -> t foterm
+    val saturate : t -> t -> t foterm * t foterm
+  end
+