X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fdynamic%2Fcnv_preserve_cpcs.ma;h=7bba18976d13589562e76ab423c44ad59a44e692;hb=7c9d99dfb049d726491b71f07ba6a9b088b30166;hp=29d85f7bddaae7d574997e756281826c60208679;hpb=ba7b8553850e4a33cf8607b07758392230d9ed40;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_preserve_cpcs.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_preserve_cpcs.ma
index 29d85f7bd..7bba18976 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_preserve_cpcs.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_preserve_cpcs.ma
@@ -20,16 +20,16 @@ include "basic_2/dynamic/cnv_preserve.ma".
 (* Forward lemmas with r-equivalence ****************************************)
 
 lemma cnv_cpms_conf_eq (h) (a) (n) (G) (L):
-      ∀T. ⦃G,L⦄ ⊢ T ![h,a] →
-      ∀T1. ⦃G,L⦄ ⊢ T ➡*[n,h] T1 → ∀T2. ⦃G,L⦄ ⊢ T ➡*[n,h] T2 → ⦃G,L⦄ ⊢ T1 ⬌*[h] T2.
+      ∀T. ❨G,L❩ ⊢ T ![h,a] →
+      ∀T1. ❨G,L❩ ⊢ T ➡*[h,n] T1 → ∀T2. ❨G,L❩ ⊢ T ➡*[h,n] T2 → ❨G,L❩ ⊢ T1 ⬌*[h] T2.
 #h #a #n #G #L #T #HT #T1 #HT1 #T2 #HT2
 elim (cnv_cpms_conf … HT … HT1 … HT2) -T <minus_n_n #T #HT1 #HT2
 /2 width=3 by cprs_div/
 qed-.
 
 lemma cnv_cpms_fwd_appl_sn_decompose (h) (a) (G) (L):
-      ∀V,T. ⦃G,L⦄ ⊢ ⓐV.T ![h,a] → ∀n,X. ⦃G,L⦄ ⊢ ⓐV.T ➡*[n,h] X →
-      ∃∃U. ⦃G,L⦄ ⊢ T ![h,a] & ⦃G,L⦄ ⊢ T ➡*[n,h] U & ⦃G,L⦄ ⊢ ⓐV.U ⬌*[h] X.
+      ∀V,T. ❨G,L❩ ⊢ ⓐV.T ![h,a] → ∀n,X. ❨G,L❩ ⊢ ⓐV.T ➡*[h,n] X →
+      ∃∃U. ❨G,L❩ ⊢ T ![h,a] & ❨G,L❩ ⊢ T ➡*[h,n] U & ❨G,L❩ ⊢ ⓐV.U ⬌*[h] X.
 #h #a #G #L #V #T #H0 #n #X #HX
 elim (cnv_inv_appl … H0) #m #p #W #U #_ #_ #HT #_ #_ -m -p -W -U
 elim (cnv_fwd_cpms_total h … n … HT) #U #HTU