X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fcontribs%2FRELATIONAL%2FNPlus%2Fdefs.ma;h=8d8b304c3afce2eb1d9aa75c68b0c59a3cdae2e7;hb=77405663b295e36da4e322c6f8184a1d256f8b78;hp=92561bc5cde818eff13fec8f94ccaf6ec19f2b88;hpb=c86f1a6c4d00f66a81c576589f215cb667595710;p=helm.git

diff --git a/matita/contribs/RELATIONAL/NPlus/defs.ma b/matita/contribs/RELATIONAL/NPlus/defs.ma
index 92561bc5c..8d8b304c3 100644
--- a/matita/contribs/RELATIONAL/NPlus/defs.ma
+++ b/matita/contribs/RELATIONAL/NPlus/defs.ma
@@ -14,10 +14,16 @@
 
 set "baseuri" "cic:/matita/RELATIONAL/NPlus/defs".
 
-include "logic/equality.ma".
-
-include "Nat/defs.ma".
+include "datatypes/Nat.ma".
 
 inductive NPlus (p:Nat): Nat \to Nat \to Prop \def
    | nplus_zero_2: NPlus p zero p
    | nplus_succ_2: \forall q, r. NPlus p q r \to NPlus p (succ q) (succ r).
+
+(*CSC: the URI must disappear: there is a bug now *)
+interpretation "natural plus predicate" 'rel_plus x y z = 
+   (cic:/matita/RELATIONAL/NPlus/defs/NPlus.ind#xpointer(1/1) x y z).
+
+notation "hvbox(a break + b break == c)"
+  non associative with precedence 95
+for @{ 'rel_plus $a $b $c}.