X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Frelocation%2Fgr_after_ist.ma;h=466df35ed3e341c0166218b5053ef20fe3d606d4;hb=2ed8d2abcc3b0687141b627061b63350a0b200bd;hp=e3f8acfcd52f8e338c22572b4287da0524c18bcb;hpb=55c768d7e45babb300b5010463ba3196a68f1bbe;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/gr_after_ist.ma b/matita/matita/contribs/lambdadelta/ground/relocation/gr_after_ist.ma
index e3f8acfcd..466df35ed 100644
--- a/matita/matita/contribs/lambdadelta/ground/relocation/gr_after_ist.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/gr_after_ist.ma
@@ -16,9 +16,9 @@ include "ground/relocation/gr_pat_lt.ma".
 include "ground/relocation/gr_ist.ma".
 include "ground/relocation/gr_after_pat.ma".
 
-(* RELATIONAL COMPOSITION FOR GENERIC RELOCATION MAPS ***********************************************************)
+(* RELATIONAL COMPOSITION FOR GENERIC RELOCATION MAPS ***********************)
 
-(* Forward lemmas on istot **************************************************)
+(* Destructions with gr_ist *************************************************)
 
 (*** after_istot_fwd *)
 lemma gr_after_ist_des:
@@ -45,14 +45,14 @@ lemma gr_after_des_ist_sn:
 qed-.
 
 (*** after_at1_fwd *)
-lemma gr_after_pat_sn_des:
+lemma gr_after_des_ist_pat:
       ∀f1,i1,i2. @❪i1, f1❫ ≘ i2 → ∀f2. 𝐓❪f2❫ → ∀f. f2 ⊚ f1 ≘ f →
       ∃∃i. @❪i2, f2❫ ≘ i & @❪i1, f❫ ≘ i.
 #f1 #i1 #i2 #Hf1 #f2 #Hf2 #f #Hf elim (Hf2 i2) -Hf2
 /3 width=8 by gr_after_des_pat, ex2_intro/
 qed-.
 
-(* Inversions with gr_ist *)
+(* Inversions with gr_ist ***************************************************)
 
 (*** after_inv_istot *)
 lemma gr_after_inv_ist: