X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Fcnuw.ma;h=a02ea47dfaf53b0a36d0f2abb8b15cffabbe65fa;hp=45b6552296426bbf8526f9ed419482c7aeaf3491;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cnuw.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cnuw.ma
index 45b655229..a02ea47df 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cnuw.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cnuw.ma
@@ -19,7 +19,7 @@ include "basic_2/rt_computation/cpms.ma".
 (* NORMAL TERMS FOR T-UNUNBOUND WHD RT-TRANSITION ***************************)
 
 definition cnuw (h) (G) (L): predicate term ≝
-           λT1. ∀n,T2. ⦃G,L⦄ ⊢ T1 ➡*[n,h] T2 → T1 ≅ T2.
+           λT1. ∀n,T2. ❪G,L❫ ⊢ T1 ➡*[n,h] T2 → T1 ≅ T2.
 
 interpretation
   "normality for t-unbound weak head context-sensitive parallel rt-transition (term)"
@@ -27,31 +27,31 @@ interpretation
 
 (* Basic properties *********************************************************)
 
-lemma cnuw_sort (h) (G) (L): ∀s. ⦃G,L⦄ ⊢ ➡𝐍𝐖*[h] ⋆s.
+lemma cnuw_sort (h) (G) (L): ∀s. ❪G,L❫ ⊢ ➡𝐍𝐖*[h] ⋆s.
 #h #G #L #s1 #n #X #H
 lapply (cpms_inv_sort1 … H) -H #H destruct //
 qed.
 
-lemma cnuw_ctop (h) (G): ∀i. ⦃G,⋆⦄ ⊢ ➡𝐍𝐖*[h] #i.
+lemma cnuw_ctop (h) (G): ∀i. ❪G,⋆❫ ⊢ ➡𝐍𝐖*[h] #i.
 #h #G #i #n #X #H
 elim (cpms_inv_lref1_ctop … H) -H #H #_ destruct //
 qed.
 
-lemma cnuw_zero_unit (h) (G) (L): ∀I. ⦃G,L.ⓤ{I}⦄ ⊢ ➡𝐍𝐖*[h] #0.
+lemma cnuw_zero_unit (h) (G) (L): ∀I. ❪G,L.ⓤ[I]❫ ⊢ ➡𝐍𝐖*[h] #0.
 #h #G #L #I #n #X #H
 elim (cpms_inv_zero1_unit … H) -H #H #_ destruct //
 qed.
 
-lemma cnuw_gref (h) (G) (L): ∀l. ⦃G,L⦄ ⊢ ➡𝐍𝐖*[h] §l.
+lemma cnuw_gref (h) (G) (L): ∀l. ❪G,L❫ ⊢ ➡𝐍𝐖*[h] §l.
 #h #G #L #l1 #n #X #H
 elim (cpms_inv_gref1 … H) -H #H #_ destruct //
 qed.
 
 (* Basic_inversion lemmas ***************************************************)
 
-lemma cnuw_inv_zero_pair (h) (I) (G) (L): ∀V. ⦃G,L.ⓑ{I}V⦄ ⊢ ➡𝐍𝐖*[h] #0 → ⊥.
+lemma cnuw_inv_zero_pair (h) (I) (G) (L): ∀V. ❪G,L.ⓑ[I]V❫ ⊢ ➡𝐍𝐖*[h] #0 → ⊥.
 #h * #G #L #V #H
-elim (lifts_total V (𝐔❴1❵)) #W #HVW
+elim (lifts_total V (𝐔❨1❩)) #W #HVW
 [ lapply (H 0 W ?) [ /3 width=3 by cpm_cpms, cpm_delta/ ]
 | lapply (H 1 W ?) [ /3 width=3 by cpm_cpms, cpm_ell/ ]
 ] -H #HW
@@ -60,7 +60,7 @@ lapply (tweq_inv_lref_sn … HW) -HW #H destruct
 qed-.
 
 lemma cnuw_inv_cast (h) (G) (L):
-      ∀V,T. ⦃G,L⦄ ⊢ ➡𝐍𝐖*[h] ⓝV.T → ⊥.
+      ∀V,T. ❪G,L❫ ⊢ ➡𝐍𝐖*[h] ⓝV.T → ⊥.
 #h #G #L #V #T #H
 lapply (H 0 T ?) [ /3 width=1 by cpm_cpms, cpm_eps/ ] -H #H
 /2 width=3 by tweq_inv_cast_xy_y/
@@ -69,7 +69,7 @@ qed-.
 (* Basic forward lemmas *****************************************************)
 
 lemma cnuw_fwd_appl (h) (G) (L):
-      ∀V,T. ⦃G,L⦄ ⊢ ➡𝐍𝐖*[h] ⓐV.T → ⦃G,L⦄ ⊢ ➡𝐍𝐖*[h] T.
+      ∀V,T. ❪G,L❫ ⊢ ➡𝐍𝐖*[h] ⓐV.T → ❪G,L❫ ⊢ ➡𝐍𝐖*[h] T.
 #h #G #L #V #T1 #HT1 #n #T2 #HT12
 lapply (HT1 n (ⓐV.T2) ?) -HT1
 /2 width=3 by cpms_appl_dx, tweq_inv_appl_bi/