X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground_2%2Frelocation%2Fmr2_plus.ma;h=041ed014c6f45fbfd4aa27d7ca9389cc865086a2;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hp=11ffaa40710a4b7d9b848e07601974aa139c37af;hpb=5102e7f780e83c7fef1d3826f81dfd37ee4028bc;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground_2/relocation/mr2_plus.ma b/matita/matita/contribs/lambdadelta/ground_2/relocation/mr2_plus.ma
index 11ffaa407..041ed014c 100644
--- a/matita/matita/contribs/lambdadelta/ground_2/relocation/mr2_plus.ma
+++ b/matita/matita/contribs/lambdadelta/ground_2/relocation/mr2_plus.ma
@@ -16,9 +16,9 @@ include "ground_2/relocation/mr2.ma".
 
 (* MULTIPLE RELOCATION WITH PAIRS *******************************************)
 
-let rec pluss (cs:mr2) (i:nat) on cs ≝ match cs with
+rec definition pluss (cs:mr2) (i:nat) on cs ≝ match cs with
 [ nil2         ⇒ ◊
-| cons2 l m cs ⇒ {l + i, m} @ pluss cs i
+| cons2 l m cs ⇒ ❨l + i,m❩;pluss cs i
 ].
 
 interpretation "plus (multiple relocation with pairs)"
@@ -26,7 +26,7 @@ interpretation "plus (multiple relocation with pairs)"
 
 (* Basic properties *********************************************************)
 
-lemma pluss_SO2: ∀l,m,cs. ({l, m} @ cs) + 1 = {⫯l, m} @ cs + 1.
+lemma pluss_SO2: ∀l,m,cs. (❨l,m❩;cs) + 1 = ❨↑l,m❩;cs + 1.
 normalize // qed.
 
 (* Basic inversion lemmas ***************************************************)
@@ -36,8 +36,8 @@ lemma pluss_inv_nil2: ∀i,cs. cs + i = ◊ → cs = ◊.
 #l #m #cs #H destruct
 qed.
 
-lemma pluss_inv_cons2: ∀i,l,m,cs2,cs. cs + i = {l, m} @ cs2 →
-                       ∃∃cs1. cs1 + i = cs2 & cs = {l - i, m} @ cs1.
+lemma pluss_inv_cons2: ∀i,l,m,cs2,cs. cs + i = ❨l,m❩;cs2 →
+                       ∃∃cs1. cs1 + i = cs2 & cs = ❨l - i,m❩;cs1.
 #i #l #m #cs2 *
 [ normalize #H destruct
 | #l1 #m1 #cs1 whd in ⊢ (??%?→?); #H destruct