X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fdynamic%2Fcnv_cpes.ma;h=abfa9df3680fc147bc6ee8e65fa11a0b8b6bfc34;hp=fbf407f50bf28c2cc2923933b95c008b906581d6;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpes.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpes.ma
index fbf407f50..abfa9df36 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpes.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpes.ma
@@ -22,33 +22,33 @@ include "basic_2/dynamic/cnv.ma".
 
 lemma cnv_appl_cpes (h) (a) (G) (L):
       ∀n. ad a n →
-      ∀V. ⦃G,L⦄ ⊢ V ![h,a] → ∀T. ⦃G,L⦄ ⊢ T ![h,a] →
-      ∀W. ⦃G,L⦄ ⊢ V ⬌*[h,1,0] W →
-      ∀p,U. ⦃G,L⦄ ⊢ T ➡*[n,h] ⓛ{p}W.U → ⦃G,L⦄ ⊢ ⓐV.T ![h,a].
+      ∀V. ❪G,L❫ ⊢ V ![h,a] → ∀T. ❪G,L❫ ⊢ T ![h,a] →
+      ∀W. ❪G,L❫ ⊢ V ⬌*[h,1,0] W →
+      ∀p,U. ❪G,L❫ ⊢ T ➡*[n,h] ⓛ[p]W.U → ❪G,L❫ ⊢ ⓐV.T ![h,a].
 #h #a #G #L #n #Hn #V #HV #T #HT #W *
 /4 width=11 by cnv_appl, cpms_cprs_trans, cpms_bind/
 qed.
 
 lemma cnv_cast_cpes (h) (a) (G) (L):
-      ∀U. ⦃G,L⦄ ⊢ U ![h,a] →
-      ∀T. ⦃G,L⦄ ⊢ T ![h,a] → ⦃G,L⦄ ⊢ U ⬌*[h,0,1] T → ⦃G,L⦄ ⊢ ⓝU.T ![h,a].
+      ∀U. ❪G,L❫ ⊢ U ![h,a] →
+      ∀T. ❪G,L❫ ⊢ T ![h,a] → ❪G,L❫ ⊢ U ⬌*[h,0,1] T → ❪G,L❫ ⊢ ⓝU.T ![h,a].
 #h #a #G #L #U #HU #T #HT * /2 width=3 by cnv_cast/
 qed.
 
 (* Inversion lemmas with t-bound rt-equivalence for terms *******************)
 
 lemma cnv_inv_appl_cpes (h) (a) (G) (L):
-      ∀V,T. ⦃G,L⦄ ⊢ ⓐV.T ![h,a] →
-      ∃∃n,p,W,U. ad a n & ⦃G,L⦄ ⊢ V ![h,a] & ⦃G,L⦄ ⊢ T ![h,a] &
-                 ⦃G,L⦄ ⊢ V ⬌*[h,1,0] W & ⦃G,L⦄ ⊢ T ➡*[n,h] ⓛ{p}W.U.
+      ∀V,T. ❪G,L❫ ⊢ ⓐV.T ![h,a] →
+      ∃∃n,p,W,U. ad a n & ❪G,L❫ ⊢ V ![h,a] & ❪G,L❫ ⊢ T ![h,a] &
+                 ❪G,L❫ ⊢ V ⬌*[h,1,0] W & ❪G,L❫ ⊢ T ➡*[n,h] ⓛ[p]W.U.
 #h #a #G #L #V #T #H
 elim (cnv_inv_appl … H) -H #n #p #W #U #Hn #HV #HT #HVW #HTU
 /3 width=7 by cpms_div, ex5_4_intro/
 qed-.
 
 lemma cnv_inv_cast_cpes (h) (a) (G) (L):
-      ∀U,T. ⦃G,L⦄ ⊢ ⓝU.T ![h,a] →
-      ∧∧ ⦃G,L⦄ ⊢ U ![h,a] & ⦃G,L⦄ ⊢ T ![h,a] & ⦃G,L⦄ ⊢ U ⬌*[h,0,1] T.
+      ∀U,T. ❪G,L❫ ⊢ ⓝU.T ![h,a] →
+      ∧∧ ❪G,L❫ ⊢ U ![h,a] & ❪G,L❫ ⊢ T ![h,a] & ❪G,L❫ ⊢ U ⬌*[h,0,1] T.
 #h #a #G #L #U #T #H
 elim (cnv_inv_cast … H) -H
 /3 width=3 by cpms_div, and3_intro/
@@ -58,19 +58,19 @@ qed-.
 
 lemma cnv_ind_cpes (h) (a) (Q:relation3 genv lenv term):
       (∀G,L,s. Q G L (⋆s)) →
-      (∀I,G,K,V. ⦃G,K⦄ ⊢ V![h,a] → Q G K V → Q G (K.ⓑ{I}V) (#O)) →
-      (∀I,G,K,i. ⦃G,K⦄ ⊢ #i![h,a] → Q G K (#i) → Q G (K.ⓘ{I}) (#(↑i))) →
-      (∀p,I,G,L,V,T. ⦃G,L⦄ ⊢ V![h,a] → ⦃G,L.ⓑ{I}V⦄⊢T![h,a] →
-                     Q G L V →Q G (L.ⓑ{I}V) T →Q G L (ⓑ{p,I}V.T)
+      (∀I,G,K,V. ❪G,K❫ ⊢ V![h,a] → Q G K V → Q G (K.ⓑ[I]V) (#O)) →
+      (∀I,G,K,i. ❪G,K❫ ⊢ #i![h,a] → Q G K (#i) → Q G (K.ⓘ[I]) (#(↑i))) →
+      (∀p,I,G,L,V,T. ❪G,L❫ ⊢ V![h,a] → ❪G,L.ⓑ[I]V❫⊢T![h,a] →
+                     Q G L V →Q G (L.ⓑ[I]V) T →Q G L (ⓑ[p,I]V.T)
       ) →
-      (∀n,p,G,L,V,W,T,U. ad a n → ⦃G,L⦄ ⊢ V![h,a] → ⦃G,L⦄ ⊢ T![h,a] →
-                         ⦃G,L⦄ ⊢ V ⬌*[h,1,0]W → ⦃G,L⦄ ⊢ T ➡*[n,h] ⓛ{p}W.U →
+      (∀n,p,G,L,V,W,T,U. ad a n → ❪G,L❫ ⊢ V![h,a] → ❪G,L❫ ⊢ T![h,a] →
+                         ❪G,L❫ ⊢ V ⬌*[h,1,0]W → ❪G,L❫ ⊢ T ➡*[n,h] ⓛ[p]W.U →
                          Q G L V → Q G L T → Q G L (ⓐV.T)
       ) →
-      (∀G,L,U,T. ⦃G,L⦄⊢ U![h,a] → ⦃G,L⦄ ⊢ T![h,a] → ⦃G,L⦄ ⊢ U ⬌*[h,0,1] T →
+      (∀G,L,U,T. ❪G,L❫⊢ U![h,a] → ❪G,L❫ ⊢ T![h,a] → ❪G,L❫ ⊢ U ⬌*[h,0,1] T →
                  Q G L U → Q G L T → Q G L (ⓝU.T)
       ) →
-      ∀G,L,T. ⦃G,L⦄⊢ T![h,a] → Q G L T.
+      ∀G,L,T. ❪G,L❫⊢ T![h,a] → Q G L T.
 #h #a #Q #IH1 #IH2 #IH3 #IH4 #IH5 #IH6 #G #L #T #H
 elim H -G -L -T [5,6: /3 width=7 by cpms_div/ |*: /2 width=1 by/ ]
 qed-.