X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fapps_2%2Ffunctional%2Fflifts_flifts_basic.ma;fp=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fapps_2%2Ffunctional%2Fflifts_flifts_basic.ma;h=059bcae657248785941ec9edf23b309cc9798df5;hb=67fe9cec87e129a2a41c75d7ed8456a6f3314421;hp=7ebdc5dab0c7037cd1eb8bd190f7bcbf597977a0;hpb=86861e6f031df66824a381527dfe847029ff72bc;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/apps_2/functional/flifts_flifts_basic.ma b/matita/matita/contribs/lambdadelta/apps_2/functional/flifts_flifts_basic.ma
index 7ebdc5dab..059bcae65 100644
--- a/matita/matita/contribs/lambdadelta/apps_2/functional/flifts_flifts_basic.ma
+++ b/matita/matita/contribs/lambdadelta/apps_2/functional/flifts_flifts_basic.ma
@@ -23,7 +23,7 @@ theorem flifts_basic_swap (T) (d1) (d2) (h1) (h2):
                           d2 ≤ d1 → ↑[d2,h2]↑[d1,h1]T = ↑[h2+d1,h1]↑[d2,h2]T.
 /3 width=1 by flifts_comp, basic_swap/ qed-.
 (*
-lemma flift_join: ∀e1,e2,T. ⬆[e1,e2] ↑[0,e1] T ≡ ↑[0,e1 + e2] T.
+lemma flift_join: ∀e1,e2,T. ⇧[e1,e2] ↑[0,e1] T ≡ ↑[0,e1 + e2] T.
 #e1 #e2 #T
 lapply (flift_lift T 0 (e1+e2)) #H
 elim (lift_split … H e1 e1) -H // #U #H