X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fmultiple%2Fllor_alt.ma;h=721d18c94e3ed1a2842e14495ded5e09d3880363;hb=c7c0bdef0ba026f4ba85528cba8cb33f6cf2ef5d;hp=0b634cbf955e4949cf4b1b5cb1e501cc7f64671c;hpb=52e675f555f559c047d5449db7fc89a51b977d35;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/multiple/llor_alt.ma b/matita/matita/contribs/lambdadelta/basic_2/multiple/llor_alt.ma
index 0b634cbf9..721d18c94 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/multiple/llor_alt.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/multiple/llor_alt.ma
@@ -19,9 +19,9 @@ include "basic_2/multiple/llor.ma".
 
 (* Alternative definition ***************************************************)
 
-lemma llor_tail_frees: ∀L1,L2,L,U,d. L1 ⩖[U, d] L2 ≡ L → d ≤ yinj (|L1|) →
+lemma llor_tail_frees: ∀L1,L2,L,U,d. L1 ⋓[U, d] L2 ≡ L → d ≤ yinj (|L1|) →
                        ∀I1,W1. ⓑ{I1}W1.L1 ⊢ |L1| ϵ 𝐅*[d]⦃U⦄ →
-                       ∀I2,W2. ⓑ{I1}W1.L1 ⩖[U, d] ⓑ{I2}W2.L2 ≡ ⓑ{I2}W2.L.
+                       ∀I2,W2. ⓑ{I1}W1.L1 ⋓[U, d] ⓑ{I2}W2.L2 ≡ ⓑ{I2}W2.L.
 #L1 #L2 #L #U #d * #HL12 #HL1 #IH #Hd #I1 #W1 #HU #I2 #W2
 @and3_intro [1,2: >ltail_length /2 width=1 by le_S_S/ ]
 #J1 #J2 #J #K1 #K2 #K #V1 #V2 #V #i #HLK1 #HLK2 #HLK
@@ -46,9 +46,9 @@ elim (le_to_or_lt_eq … H) -H #H
 ]
 qed.
 
-lemma llor_tail_cofrees: ∀L1,L2,L,U,d. L1 ⩖[U, d] L2 ≡ L →
+lemma llor_tail_cofrees: ∀L1,L2,L,U,d. L1 ⋓[U, d] L2 ≡ L →
                          ∀I1,W1. (ⓑ{I1}W1.L1 ⊢ |L1| ϵ 𝐅*[d]⦃U⦄ → ⊥) →
-                         ∀I2,W2. ⓑ{I1}W1.L1 ⩖[U, d] ⓑ{I2}W2.L2 ≡ ⓑ{I1}W1.L.
+                         ∀I2,W2. ⓑ{I1}W1.L1 ⋓[U, d] ⓑ{I2}W2.L2 ≡ ⓑ{I1}W1.L.
 #L1 #L2 #L #U #d * #HL12 #HL1 #IH #I1 #W1 #HU #I2 #W2
 @and3_intro [1,2: >ltail_length /2 width=1 by le_S_S/ ]
 #J1 #J2 #J #K1 #K2 #K #V1 #V2 #V #i #HLK1 #HLK2 #HLK