X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fmultiple%2Fllpx_sn_llor.ma;h=235eedbdacb2c5987f445cd0d02d685ec6fbc17d;hb=5102e7f780e83c7fef1d3826f81dfd37ee4028bc;hp=e5933d4c7358fabc4db7604a9b609d30007a1137;hpb=7e06d9d148ae04a21943377debd933a742d0c2fa;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/multiple/llpx_sn_llor.ma b/matita/matita/contribs/lambdadelta/basic_2/multiple/llpx_sn_llor.ma
index e5933d4c7..235eedbda 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/multiple/llpx_sn_llor.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/multiple/llpx_sn_llor.ma
@@ -21,9 +21,9 @@ include "basic_2/multiple/lleq_alt.ma".
 (* Inversion lemmas on pointwise union for local environments ****************)
 
 lemma llpx_sn_llor_fwd_sn: ∀R. (∀L. reflexive … (R L)) →
-                           ∀L1,L2,T,d. llpx_sn R d T L1 L2 →
-                           ∀L. L1 ⩖[T, d] L2 ≡ L → lpx_sn R L1 L.
-#R #HR #L1 #L2 #T #d #H1 #L #H2
+                           ∀L1,L2,T,l. llpx_sn R l T L1 L2 →
+                           ∀L. L1 ⋓[T, l] L2 ≡ L → lpx_sn R L1 L.
+#R #HR #L1 #L2 #T #l #H1 #L #H2
 elim (llpx_sn_llpx_sn_alt … H1) -H1 #HL12 #IH1
 elim H2 -H2 #_ #HL1 #IH2
 @lpx_sn_intro_alt // #I1 #I #K1 #K #V1 #V #i #HLK1 #HLK