X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Frelocation%2Fgr_nat_basic.ma;h=a9c9cae2a895c5eb2793074126ebfec8a534d49c;hp=77ed0ed6d28863685d793d61358fb462a6034a03;hb=2ed8d2abcc3b0687141b627061b63350a0b200bd;hpb=b367de0252e88d6b0476648d5ceac7e4aeffca27

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/gr_nat_basic.ma b/matita/matita/contribs/lambdadelta/ground/relocation/gr_nat_basic.ma
index 77ed0ed6d..a9c9cae2a 100644
--- a/matita/matita/contribs/lambdadelta/ground/relocation/gr_nat_basic.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/gr_nat_basic.ma
@@ -15,9 +15,9 @@
 include "ground/relocation/gr_basic.ma".
 include "ground/relocation/gr_nat_uni.ma".
 
-(* NON-NEGATIVE APPLICATION FOR GENERIC RELOCATION MAPS *****************************)
+(* NON-NEGATIVE APPLICATION FOR GENERIC RELOCATION MAPS *********************)
 
-(* Properties with gr_basic **********************************************)
+(* Constructions with gr_basic **********************************************)
 
 lemma gr_nat_basic_lt (m) (n) (l):
       l < m → @↑❪l, 𝐛❨m,n❩❫ ≘ l.
@@ -40,7 +40,7 @@ elim (nle_inv_succ_sn … H) -H #Hml #H >H -H
 /3 width=7 by gr_nat_push/
 qed.
 
-(* Inversion lemmas with gr_basic ****************************************)
+(* Inversions with gr_basic *************************************************)
 
 lemma gr_nat_basic_inv_lt (m) (n) (l) (k):
       l < m → @↑❪l, 𝐛❨m,n❩❫ ≘ k → l = k.