update in ground

[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
index 0a79bbc18635aaef750e5596379f66b6ea49d95c..0812fab2ef002437372284d0fc0c6fd86c5d26b7 100644 (file)
--- a/matita/matita/contribs/lambdadelta/ground/relocation/gr_nat_uni.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/gr_nat_uni.ma
@@ -16,16 +16,16 @@ 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 *****************************)
+(* NON-NEGATIVE APPLICATION FOR GENERIC RELOCATION MAPS *********************)
 
-(* Properties with uniform relocations **************************************)
+(* Constructions with gr_uni ************************************************)
 
 lemma gr_nat_uni (n) (l):
       @↑❪l,𝐮❨n❩❫ ≘ l+n.
 /2 width=1 by gr_nat_pred_bi/
 qed.
 
-(* Inversion lemmas with uniform relocations ********************************)
+(* Inversions with gr_uni ***************************************************)
 
 lemma gr_nat_inv_uni (n) (l) (k):
       @↑❪l,𝐮❨n❩❫ ≘ k → k = l+n.