(* *)
(**************************************************************************)
-set "baseuri" "cic:/matita/RELATIONAL/NPlus/defs".
+
include "datatypes/Nat.ma".
-inductive NPlus (p:Nat): Nat \to Nat \to Prop \def
+inductive NPlus (p:Nat): Nat → Nat → Prop ≝
| nplus_zero_2: NPlus p zero p
- | nplus_succ_2: \forall q, r. NPlus p q r \to NPlus p (succ q) (succ r).
+ | nplus_succ_2: ∀q, r. NPlus p q r → 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).
+interpretation "natural plus predicate" 'rel_plus x y z = (NPlus x y z).
-notation "hvbox(a break + b break == c)"
- non associative with precedence 95
-for @{ 'rel_plus $a $b $c}.
+notation "hvbox(a break ⊕ b break ≍ c)"
+ non associative with precedence 45
+for @{'rel_plus $a $b $c}.