X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Frelocation%2Ffr2_append.ma;h=911c011b4a1327fac088fc8eaa08b2910c5bf99e;hb=291fe1d3b56faf91d07099f43f3ebde2988649e1;hp=b50a5cfa86dc2a7e38de61db956140f3a018c248;hpb=b5507c449ba38a76666a35664f9cf4e1953ad8ec;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/fr2_append.ma b/matita/matita/contribs/lambdadelta/ground/relocation/fr2_append.ma
index b50a5cfa8..911c011b4 100644
--- a/matita/matita/contribs/lambdadelta/ground/relocation/fr2_append.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/fr2_append.ma
@@ -12,30 +12,30 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "ground/notation/functions/double_semicolon_2.ma".
+include "ground/notation/functions/black_circle_2.ma".
 include "ground/relocation/fr2_map.ma".
 
 (* CONCATENATION FOR FINITE RELOCATION MAPS WITH PAIRS **********************)
 
-(* Note: this is compose *)
+(* Note: this is reverse compose *)
 (*** fr2_append *)
 rec definition fr2_append f1 f2 on f1 ≝ match f1 with
 [ fr2_empty        ⇒ f2
-| fr2_lcons d h f1 ⇒ ❨d, h❩; fr2_append f1 f2
+| fr2_lcons d h f1 ⇒ ❨d, h❩◗ fr2_append f1 f2
 ].
 
 interpretation
   "append (finite relocation maps with pairs)" 
-  'DoubleSemicolon f1 f2 = (fr2_append f1 f2).
+  'BlackCircle f1 f2 = (fr2_append f1 f2).
 
 (* Basic constructions ******************************************************)
 
 (*** mr2_append_nil *)
 lemma fr2_append_empty (f2):
-      f2 = 𝐞 ;; f2.
+      f2 = 𝐞 ● f2.
 // qed.
 
 (*** mr2_append_cons *)
 lemma fr2_append_lcons (d) (h) (f1) (f2):
-      ❨d, h❩; (f1 ;; f2) = (❨d, h❩; f1) ;; f2.
+      ❨d, h❩◗ (f1 ● f2) = (❨d, h❩◗ f1) ● f2.
 // qed.