X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fdynamic%2Fnta_fsb.ma;h=de8554b4820a249801e6b0ff95dee49635b6fc6c;hb=3c7b4071a9ac096b02334c1d47468776b948e2de;hp=5aea50a665c3a15abf396c569fb9b1460add4092;hpb=5b5dca0c118dfbe3ba8f0514ef07549544eb7810;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/nta_fsb.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/nta_fsb.ma
index 5aea50a66..de8554b48 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/nta_fsb.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/nta_fsb.ma
@@ -24,9 +24,9 @@ include "basic_2/dynamic/nta.ma".
 (* Basic_1: uses: ty3_sn3 *)
 (* Basic_2A1: uses: nta_fwd_csn *)
 theorem nta_fwd_fsb (h) (a) (G) (L):
-        ∀T,U. ⦃G,L⦄ ⊢ T :[h,a] U →
-        ∧∧ ≥[h] 𝐒⦃G,L,T⦄ & ≥[h] 𝐒⦃G,L,U⦄.
+        ∀T,U. ❪G,L❫ ⊢ T :[h,a] U →
+        ∧∧ ≥𝐒 ❪G,L,T❫ & ≥𝐒 ❪G,L,U❫.
 #h #a #G #L #T #U #H
 elim (cnv_inv_cast … H) #X #HU #HT #_ #_ -X
-/3 width=2 by cnv_fwd_fsb, conj/
-qed-. 
+/3 width=3 by cnv_fwd_fsb, conj/
+qed-.