X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fstatic%2Freqx_drops.ma;h=2e82d705392c742b3f039fde206fa42e7388790b;hp=1a0837d5c331bb2dc230436117d9818c15e0fab0;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/static_2/static/reqx_drops.ma b/matita/matita/contribs/lambdadelta/static_2/static/reqx_drops.ma
index 1a0837d5c..2e82d7053 100644
--- a/matita/matita/contribs/lambdadelta/static_2/static/reqx_drops.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/static/reqx_drops.ma
@@ -31,22 +31,22 @@ lemma reqx_inv_lifts_sn: f_dropable_sn cdeq.
 lemma reqx_inv_lifts_dx: f_dropable_dx cdeq.
 /2 width=5 by rex_dropable_dx/ qed-.
 
-lemma reqx_inv_lifts_bi: ∀L1,L2,U. L1 ≛[U] L2 → ∀b,f. 𝐔⦃f⦄ →
+lemma reqx_inv_lifts_bi: ∀L1,L2,U. L1 ≛[U] L2 → ∀b,f. 𝐔❪f❫ →
                          ∀K1,K2. ⇩*[b,f] L1 ≘ K1 → ⇩*[b,f] L2 ≘ K2 →
                          ∀T. ⇧*[f] T ≘ U → K1 ≛[T] K2.
 /2 width=10 by rex_inv_lifts_bi/ qed-.
 
-lemma reqx_inv_lref_pair_sn: ∀L1,L2,i. L1 ≛[#i] L2 → ∀I,K1,V1. ⇩*[i] L1 ≘ K1.ⓑ{I}V1 →
-                             ∃∃K2,V2. ⇩*[i] L2 ≘ K2.ⓑ{I}V2 & K1 ≛[V1] K2 & V1 ≛ V2.
+lemma reqx_inv_lref_pair_sn: ∀L1,L2,i. L1 ≛[#i] L2 → ∀I,K1,V1. ⇩*[i] L1 ≘ K1.ⓑ[I]V1 →
+                             ∃∃K2,V2. ⇩*[i] L2 ≘ K2.ⓑ[I]V2 & K1 ≛[V1] K2 & V1 ≛ V2.
 /2 width=3 by rex_inv_lref_pair_sn/ qed-.
 
-lemma reqx_inv_lref_pair_dx: ∀L1,L2,i. L1 ≛[#i] L2 → ∀I,K2,V2. ⇩*[i] L2 ≘ K2.ⓑ{I}V2 →
-                             ∃∃K1,V1. ⇩*[i] L1 ≘ K1.ⓑ{I}V1 & K1 ≛[V1] K2 & V1 ≛ V2.
+lemma reqx_inv_lref_pair_dx: ∀L1,L2,i. L1 ≛[#i] L2 → ∀I,K2,V2. ⇩*[i] L2 ≘ K2.ⓑ[I]V2 →
+                             ∃∃K1,V1. ⇩*[i] L1 ≘ K1.ⓑ[I]V1 & K1 ≛[V1] K2 & V1 ≛ V2.
 /2 width=3 by rex_inv_lref_pair_dx/ qed-.
 
 lemma reqx_inv_lref_pair_bi (L1) (L2) (i):
                             L1 ≛[#i] L2 →
-                            ∀I1,K1,V1. ⇩*[i] L1 ≘ K1.ⓑ{I1}V1 →
-                            ∀I2,K2,V2. ⇩*[i] L2 ≘ K2.ⓑ{I2}V2 →
+                            ∀I1,K1,V1. ⇩*[i] L1 ≘ K1.ⓑ[I1]V1 →
+                            ∀I2,K2,V2. ⇩*[i] L2 ≘ K2.ⓑ[I2]V2 →
                             ∧∧ K1 ≛[V1] K2 & V1 ≛ V2 & I1 = I2.
 /2 width=6 by rex_inv_lref_pair_bi/ qed-.