X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frelocation%2Flreq_lreq.ma;h=b2bf0385a202cd8e6f21c299d29828848bd0c11e;hp=ec166cb7d772edf5c4d93d4e33ea9b629b4ba362;hb=268e7f336d036f77ffc9663358e9afda92b97730;hpb=1604f2ee65c57eefb7c6b3122eab2a9f32e0552d

diff --git a/matita/matita/contribs/lambdadelta/basic_2/relocation/lreq_lreq.ma b/matita/matita/contribs/lambdadelta/basic_2/relocation/lreq_lreq.ma
index ec166cb7d..b2bf0385a 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/relocation/lreq_lreq.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/relocation/lreq_lreq.ma
@@ -28,10 +28,10 @@ theorem lreq_canc_sn: ∀f. left_cancellable … (lreq f).
 theorem lreq_canc_dx: ∀f. right_cancellable … (lreq f).
 /3 width=3 by lexs_canc_dx, lreq_trans, lreq_sym/ qed-.
 
-theorem lreq_join: ∀f1,L1,L2. L1 ≡[f1] L2 → ∀f2. L1 ≡[f2] L2 →
-                   ∀f. f1 ⋓ f2 ≡ f → L1 ≡[f] L2.
+theorem lreq_join: ∀f1,L1,L2. L1 ≐[f1] L2 → ∀f2. L1 ≐[f2] L2 →
+                   ∀f. f1 ⋓ f2 ≡ f → L1 ≐[f] L2.
 /2 width=5 by lexs_join/ qed-.
 
-theorem lreq_meet: ∀f1,L1,L2. L1 ≡[f1] L2 → ∀f2. L1 ≡[f2] L2 →
-                   ∀f. f1 ⋒ f2 ≡ f → L1 ≡[f] L2.
+theorem lreq_meet: ∀f1,L1,L2. L1 ≐[f1] L2 → ∀f2. L1 ≐[f2] L2 →
+                   ∀f. f1 ⋒ f2 ≡ f → L1 ≐[f] L2.
 /2 width=5 by lexs_meet/ qed-.