X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Farith%2Fnat_lt_minus_plus.ma;h=5fbbd53ea24faf7a2903a2b21d8db854b2bc52d3;hp=61cc525ade7326a53aad7e03beff519950447981;hb=19b0a814861157ba05f23877d5cd94059f52c2e8;hpb=21de0d35017656c5a55528390b54b0b2ae395b44

diff --git a/matita/matita/contribs/lambdadelta/ground/arith/nat_lt_minus_plus.ma b/matita/matita/contribs/lambdadelta/ground/arith/nat_lt_minus_plus.ma
index 61cc525ad..5fbbd53ea 100644
--- a/matita/matita/contribs/lambdadelta/ground/arith/nat_lt_minus_plus.ma
+++ b/matita/matita/contribs/lambdadelta/ground/arith/nat_lt_minus_plus.ma
@@ -22,13 +22,13 @@ include "ground/arith/nat_lt_minus.ma".
 (*** lt_plus_to_minus *)
 lemma nlt_minus_sn (o) (m) (n): m ≤ n → n < o + m → n - m < o.
 #o #m #n #Hmn #Ho
-lapply (nle_minus_sn … Ho) -Ho
+lapply (nle_minus_sn_sn … Ho) -Ho
 <nminus_succ_sn //
 qed.
 
 (*** lt_plus_to_minus_r *)
 lemma nlt_minus_dx (o) (m) (n): m + o < n → m < n - o.
-/2 width=1 by nle_minus_dx/ qed.
+/2 width=1 by nle_minus_dx_sn/ qed.
 
 (*** lt_inv_plus_l *)
 lemma nlt_minus_dx_full (o) (m) (n): m + o < n → ∧∧ o < n & m < n - o.