X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frelocation%2Flreq_lreq.ma;h=d0c06d0c7dc0ac9cbbc41774895e4d9964330782;hb=5c186c72f508da0849058afeecc6877cd9ed6303;hp=ec166cb7d772edf5c4d93d4e33ea9b629b4ba362;hpb=7cf2232827c06c7e85a9bc3be005f9134d5b869d;p=helm.git

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..d0c06d0c7 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/relocation/lreq_lreq.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/relocation/lreq_lreq.ma
@@ -29,9 +29,9 @@ 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.
+                   ∀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.
+                   ∀f. f1 ⋒ f2 ≘ f → L1 ≡[f] L2.
 /2 width=5 by lexs_meet/ qed-.