X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Farith%2Fnat_le_max.ma;h=b877b8649d1e4707a32af982605f63acabe2e6f6;hp=0ad906540d533e3dab19ca98ff8f1b3154a4d116;hb=ae626612bff9c3746dd7647bbada791c737e348c;hpb=4d232392091ee233afc26ecf3120dd5f5c6a33c8

diff --git a/matita/matita/contribs/lambdadelta/ground/arith/nat_le_max.ma b/matita/matita/contribs/lambdadelta/ground/arith/nat_le_max.ma
index 0ad906540..b877b8649 100644
--- a/matita/matita/contribs/lambdadelta/ground/arith/nat_le_max.ma
+++ b/matita/matita/contribs/lambdadelta/ground/arith/nat_le_max.ma
@@ -35,9 +35,7 @@ lemma nle_max_dx_refl_sn (m) (n): m ≤ (m ∨ n).
 qed.
 
 lemma nle_max_dx_refl_dx (m) (n): n ≤ (m ∨ n).
-#m #n @(nat_ind_2_succ … n m) -m -n //
-#m #n #IH <nmax_succ_bi /2 width=1 by nle_succ_bi/
-qed.
+// qed.
 
 (* Basic destructions with nmax *********************************************)