helm/software/matita/contribs/RELATIONAL/NPlus/defs.ma

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   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
   5 (*      ||T||                                                             *)
   6 (*      ||I||       Developers:                                           *)
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  10 (*       \ /        This file is distributed under the terms of the       *)
  11 (*        v         GNU General Public License Version 2                  *)
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  13 (**************************************************************************)
  14
  15 set "baseuri" "cic:/matita/RELATIONAL/NPlus/defs".
  16
  17 include "logic/equality.ma".
  18
  19 include "Nat/defs.ma".
  20
  21 inductive NPlus (p:Nat): Nat \to Nat \to Prop \def
  22    | nplus_zero_2: NPlus p zero p
  23    | nplus_succ_2: \forall q, r. NPlus p q r \to NPlus p (succ q) (succ r).