X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fstatic%2Flsubr_lsubr.ma;h=937f6f78c30893dd323b3cdbaea9ca9a3b4d667f;hb=bcab3f92c6f815098ecc24eff06bfd3d232eb497;hp=9c3fec807ce2ac7b9364473a4552746dff90faf6;hpb=944b1f7b762774a6f8d99a2c2846f865b6788712;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/static/lsubr_lsubr.ma b/matita/matita/contribs/lambdadelta/basic_2/static/lsubr_lsubr.ma
index 9c3fec807..937f6f78c 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/static/lsubr_lsubr.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/static/lsubr_lsubr.ma
@@ -18,10 +18,10 @@ include "basic_2/static/lsubr.ma".
 
 (* Auxiliary inversion lemmas ***********************************************)
 
-fact lsubr_inv_bind1_aux: ∀L1,L2. L1 ⊑ L2 → ∀I,K1,X. L1 = K1.ⓑ{I}X →
+fact lsubr_inv_bind1_aux: ∀L1,L2. L1 ⫃ L2 → ∀I,K1,X. L1 = K1.ⓑ{I}X →
                           ∨∨ L2 = ⋆
-                           | ∃∃K2. K1 ⊑ K2 & L2 = K2.ⓑ{I}X
-                           | ∃∃K2,V,W. K1 ⊑ K2 & L2 = K2.ⓛW &
+                           | ∃∃K2. K1 ⫃ K2 & L2 = K2.ⓑ{I}X
+                           | ∃∃K2,V,W. K1 ⫃ K2 & L2 = K2.ⓛW &
                                        I = Abbr & X = ⓝW.V.
 #L1 #L2 * -L1 -L2
 [ #L #J #K1 #X #H destruct /2 width=1 by or3_intro0/
@@ -30,10 +30,10 @@ fact lsubr_inv_bind1_aux: ∀L1,L2. L1 ⊑ L2 → ∀I,K1,X. L1 = K1.ⓑ{I}X →
 ]
 qed-.
 
-lemma lsubr_inv_bind1: ∀I,K1,L2,X. K1.ⓑ{I}X ⊑ L2 →
+lemma lsubr_inv_bind1: ∀I,K1,L2,X. K1.ⓑ{I}X ⫃ L2 →
                        ∨∨ L2 = ⋆
-                        | ∃∃K2. K1 ⊑ K2 & L2 = K2.ⓑ{I}X
-                        | ∃∃K2,V,W. K1 ⊑ K2 & L2 = K2.ⓛW &
+                        | ∃∃K2. K1 ⫃ K2 & L2 = K2.ⓑ{I}X
+                        | ∃∃K2,V,W. K1 ⫃ K2 & L2 = K2.ⓛW &
                                     I = Abbr & X = ⓝW.V.
 /2 width=3 by lsubr_inv_bind1_aux/ qed-.