X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground_2%2Fsteps%2Frtc_ist_plus.ma;h=7e154d6b973e6c6113beb58cc65c28ab6796d1f8;hp=a66a81d29ac882bfb0c8cff1dbb1f3ccee47a1ac;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/ground_2/steps/rtc_ist_plus.ma b/matita/matita/contribs/lambdadelta/ground_2/steps/rtc_ist_plus.ma
index a66a81d29..7e154d6b9 100644
--- a/matita/matita/contribs/lambdadelta/ground_2/steps/rtc_ist_plus.ma
+++ b/matita/matita/contribs/lambdadelta/ground_2/steps/rtc_ist_plus.ma
@@ -19,25 +19,25 @@ include "ground_2/steps/rtc_ist.ma".
 
 (* Properties with test for t-transition counter ****************************)
 
-lemma ist_plus: ∀n1,n2,c1,c2. 𝐓⦃n1,c1⦄ → 𝐓⦃n2,c2⦄ → 𝐓⦃n1+n2,c1+c2⦄.
+lemma ist_plus: ∀n1,n2,c1,c2. 𝐓❪n1,c1❫ → 𝐓❪n2,c2❫ → 𝐓❪n1+n2,c1+c2❫.
 #n1 #n2 #c1 #c2 #H1 #H2 destruct //
 qed.
 
-lemma ist_plus_O1: ∀n,c1,c2. 𝐓⦃0,c1⦄ → 𝐓⦃n,c2⦄ → 𝐓⦃n,c1+c2⦄.
+lemma ist_plus_O1: ∀n,c1,c2. 𝐓❪0,c1❫ → 𝐓❪n,c2❫ → 𝐓❪n,c1+c2❫.
 /2 width=1 by ist_plus/ qed.
 
-lemma ist_plus_O2: ∀n,c1,c2. 𝐓⦃n,c1⦄ → 𝐓⦃0,c2⦄ → 𝐓⦃n,c1+c2⦄.
+lemma ist_plus_O2: ∀n,c1,c2. 𝐓❪n,c1❫ → 𝐓❪0,c2❫ → 𝐓❪n,c1+c2❫.
 #n #c1 #c2 #H1 #H2 >(plus_n_O n) /2 width=1 by ist_plus/
 qed.
 
-lemma ist_succ: ∀n,c. 𝐓⦃n,c⦄ → 𝐓⦃↑n,c+𝟘𝟙⦄.
+lemma ist_succ: ∀n,c. 𝐓❪n,c❫ → 𝐓❪↑n,c+𝟘𝟙❫.
 /2 width=1 by ist_plus/ qed.
 
 (* Inversion properties with test for constrained rt-transition counter *****)
 
 lemma ist_inv_plus:
-      ∀n,c1,c2. 𝐓⦃n,c1 + c2⦄ →
-      ∃∃n1,n2. 𝐓⦃n1,c1⦄ & 𝐓⦃n2,c2⦄ & n1 + n2 = n.
+      ∀n,c1,c2. 𝐓❪n,c1 + c2❫ →
+      ∃∃n1,n2. 𝐓❪n1,c1❫ & 𝐓❪n2,c2❫ & n1 + n2 = n.
 #n #c1 #c2 #H
 elim (plus_inv_dx … H) -H #ri1 #rs1 #ti1 #ts1 #ri2 #rs2 #ti2 #ts2 #H1 #H2 #H3 #H4 #H5 #H6 destruct
 elim (plus_inv_O3 … H1) -H1 #H11 #H12 destruct
@@ -46,20 +46,20 @@ elim (plus_inv_O3 … H3) -H3 #H31 #H32 destruct
 /3 width=5 by ex3_2_intro/
 qed-.
 
-lemma ist_inv_plus_O_dx: ∀n,c1,c2. 𝐓⦃n,c1 + c2⦄ → 𝐓⦃0,c2⦄ → 𝐓⦃n,c1⦄.
+lemma ist_inv_plus_O_dx: ∀n,c1,c2. 𝐓❪n,c1 + c2❫ → 𝐓❪0,c2❫ → 𝐓❪n,c1❫.
 #n #c1 #c2 #H #H2
 elim (ist_inv_plus … H) -H #n1 #n2 #Hn1 #Hn2 #H destruct //
 qed-.
 
 lemma ist_inv_plus_SO_dx:
-      ∀n,c1,c2. 𝐓⦃n,c1 + c2⦄ → 𝐓⦃1,c2⦄ →
-      ∃∃m. 𝐓⦃m,c1⦄ & n = ↑m.
+      ∀n,c1,c2. 𝐓❪n,c1 + c2❫ → 𝐓❪1,c2❫ →
+      ∃∃m. 𝐓❪m,c1❫ & n = ↑m.
 #n #c1 #c2 #H #H2 destruct
 elim (ist_inv_plus … H) -H #n1 #n2 #Hn1 #Hn2 #H destruct
 /2 width=3 by ex2_intro/
 qed-.
 
-lemma ist_inv_plus_10_dx: ∀n,c. 𝐓⦃n,c+𝟙𝟘⦄ → ⊥.
+lemma ist_inv_plus_10_dx: ∀n,c. 𝐓❪n,c+𝟙𝟘❫ → ⊥.
 #n #c #H
 elim (ist_inv_plus … H) -H #n1 #n2 #_ #H #_
 /2 width=2 by ist_inv_10/