X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Fjsx_drops.ma;h=ab13f071879864465c7c7d9a9284cf3b0aa0af6b;hb=3bf7a0b4185dbffe5b822c907956acdbe2d1c559;hp=2fb26c5b5cfd693a0ce58353561b79e9339329bf;hpb=3c7b4071a9ac096b02334c1d47468776b948e2de;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/jsx_drops.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/jsx_drops.ma
index 2fb26c5b5..ab13f0718 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/jsx_drops.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/jsx_drops.ma
@@ -21,7 +21,7 @@ include "basic_2/rt_computation/jsx.ma".
 
 lemma jsx_fwd_drops_atom_sn (b) (G):
       ∀L1,L2. G ⊢ L1 ⊒ L2 →
-      ∀f. 𝐔❪f❫ → ⇩*[b,f]L1 ≘ ⋆ → ⇩*[b,f]L2 ≘ ⋆.
+      ∀f. 𝐔❨f❩ → ⇩*[b,f]L1 ≘ ⋆ → ⇩*[b,f]L2 ≘ ⋆.
 #b #G #L1 #L2 #H elim H -L1 -L2
 [ #f #_ #H //
 | #I #K1 #K2 #_ #IH #f #Hf #H
@@ -35,7 +35,7 @@ qed-.
 
 lemma jsx_fwd_drops_unit_sn (b) (G):
       ∀L1,L2. G ⊢ L1 ⊒ L2 →
-      ∀f. 𝐔❪f❫ → ∀I,K1. ⇩*[b,f]L1 ≘ K1.ⓤ[I] →
+      ∀f. 𝐔❨f❩ → ∀I,K1. ⇩*[b,f]L1 ≘ K1.ⓤ[I] →
       ∃∃K2. G ⊢ K1 ⊒ K2 & ⇩*[b,f]L2 ≘ K2.ⓤ[I].
 #b #G #L1 #L2 #H elim H -L1 -L2
 [ #f #_ #J #Y1 #H
@@ -54,7 +54,7 @@ qed-.
 
 lemma jsx_fwd_drops_pair_sn (b) (G):
       ∀L1,L2. G ⊢ L1 ⊒ L2 →
-      ∀f. 𝐔❪f❫ → ∀I,K1,V. ⇩*[b,f]L1 ≘ K1.ⓑ[I]V →
+      ∀f. 𝐔❨f❩ → ∀I,K1,V. ⇩*[b,f]L1 ≘ K1.ⓑ[I]V →
       ∨∨ ∃∃K2. G ⊢ K1 ⊒ K2 & ⇩*[b,f]L2 ≘ K2.ⓑ[I]V
        | ∃∃K2. G ⊢ K1 ⊒ K2 & ⇩*[b,f]L2 ≘ K2.ⓧ & G ⊢ ⬈*𝐒[V] K2.
 #b #G #L1 #L2 #H elim H -L1 -L2