X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fdama%2Fdama%2Fmodels%2Fnat_dedekind_sigma_complete.ma;h=2206017452995e0bc2d815dd0244da9838a1ddae;hb=910c252965fe17d6b5af92e4658e7d02bac82d58;hp=cb73c2d5f42aa617f167d4954ba63da2d3297496;hpb=98c84d48f4511cb52c8dc03881e113bd4bd9c6ce;p=helm.git

diff --git a/helm/software/matita/contribs/dama/dama/models/nat_dedekind_sigma_complete.ma b/helm/software/matita/contribs/dama/dama/models/nat_dedekind_sigma_complete.ma
index cb73c2d5f..220601745 100644
--- a/helm/software/matita/contribs/dama/dama/models/nat_dedekind_sigma_complete.ma
+++ b/helm/software/matita/contribs/dama/dama/models/nat_dedekind_sigma_complete.ma
@@ -57,7 +57,7 @@ letin m ≝ (hide ? (
         apply le_plus_n_r;] 
 |2,3: clear H6;
     cases (aux n1) in H5 ⊢ %; intros;
-    change in match (a 〈w,H5〉) in H6 ⊢ % with (a w);
+    change in match (a ≪w,H5≫) in H6 ⊢ % with (a w);
     cases H5; clear H5; cases H7; clear H7;
     [1: left; split; [ apply (le_S ?? H5); | assumption]
     |3: cases (?:False); rewrite < H8 in H6; apply (not_le_Sn_n ? H6);