X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Fcpx_drops_basic.ma;h=4be41497df56bf067a1a0618d28b03f30a8096e9;hb=55c768d7e45babb300b5010463ba3196a68f1bbe;hp=37551625dad494ecd0f87b1a6feb1833674c0f6d;hpb=15212e44902f25536f6e2de4bec4cedcd9a9804d;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_drops_basic.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_drops_basic.ma
index 37551625d..4be41497d 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_drops_basic.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_drops_basic.ma
@@ -30,7 +30,7 @@ lemma cpx_subst (G) (L) (U1) (i):
   elim (lt_or_eq_or_gt i j) #Hij
   [ /3 width=4 by lifts_lref_ge_minus, cpx_refl, ex2_2_intro/
   | elim (lifts_total V (𝐔❨↑i❩)) #U2 #HU2
-    elim (lifts_split_trans … HU2 (𝐔❨i❩) (𝐁❨i,1❩)) [2: @(after_basic_rc i 0) ]
+    elim (lifts_split_trans … HU2 (𝐔❨i❩) (𝐛❨i,1❩)) [2: @(after_basic_rc i 0) ]
     /3 width=7 by cpx_delta_drops, ex2_2_intro/
   | /3 width=4 by lifts_lref_lt, cpx_refl, ex2_2_intro/
   ]