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[helm.git] / matita / matita / contribs / lambdadelta / ground / relocation / gr_nat_uni.ma
diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/gr_nat_uni.ma b/matita/matita/contribs/lambdadelta/ground/relocation/gr_nat_uni.ma
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-(**************************************************************************)
-(*       ___                                                              *)
-(*      ||M||                                                             *)
-(*      ||A||       A project by Andrea Asperti                           *)
-(*      ||T||                                                             *)
-(*      ||I||       Developers:                                           *)
-(*      ||T||         The HELM team.                                      *)
-(*      ||A||         http://helm.cs.unibo.it                             *)
-(*      \   /                                                             *)
-(*       \ /        This file is distributed under the terms of the       *)
-(*        v         GNU General Public License Version 2                  *)
-(*                                                                        *)
-(**************************************************************************)
-
-include "ground/arith/nat_plus_rplus.ma".
-include "ground/relocation/gr_pat_uni.ma".
-include "ground/relocation/gr_nat_nat.ma".
-
-(* NON-NEGATIVE APPLICATION FOR GENERIC RELOCATION MAPS *********************)
-
-(* Constructions with gr_uni ************************************************)
-
-lemma gr_nat_uni (n) (l):
-      @↑❪l,𝐮❨n❩❫ ≘ l+n.
-/2 width=1 by gr_nat_pred_bi/
-qed.
-
-(* Inversions with gr_uni ***************************************************)
-
-lemma gr_nat_inv_uni (n) (l) (k):
-      @↑❪l,𝐮❨n❩❫ ≘ k → k = l+n.
-/2 width=4 by gr_nat_mono/ qed-.