X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Frelocation%2Ffr2_nat_nat.ma;fp=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Frelocation%2Ffr2_nat_nat.ma;h=c84990142f8c73b4661697b94c15d3b00168a327;hb=77479649510792efe4d9cbff508e118360862594;hp=b4033e80c6440fc6f0478c5d8299d6e128e90601;hpb=9b4e20442ec5a4028cfe2b6fe836c94acdb033b8;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/fr2_nat_nat.ma b/matita/matita/contribs/lambdadelta/ground/relocation/fr2_nat_nat.ma
index b4033e80c..c84990142 100644
--- a/matita/matita/contribs/lambdadelta/ground/relocation/fr2_nat_nat.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/fr2_nat_nat.ma
@@ -20,7 +20,7 @@ include "ground/relocation/fr2_nat.ma".
 
 (*** at_mono *)
 theorem fr2_nat_mono (f) (l):
-        ∀l1. @❨l, f❩ ≘ l1 → ∀l2. @❨l, f❩ ≘ l2 → l1 = l2.
+        ∀l1. @↑❨l, f❩ ≘ l1 → ∀l2. @↑❨l, f❩ ≘ l2 → l1 = l2.
 #f #l #l1 #H elim H -f -l -l1
 [ #l #x #H <(fr2_nat_inv_empty … H) -x //
 | #f #d #h #l #l1 #Hld #_ #IH #x #H