X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fdelayed_updating%2Fsyntax%2Fpath_closed_structure.ma;h=ab812e9b2cf9bdcfb39f19e84ad6a8c41728a9b0;hb=ea71486fd1aab2eae2bab42729a66ae775c7f248;hp=44554b79e439aaadf5a2310fa4250b99c0e15ee9;hpb=73cc0c523c5264f2883c25f6735be325e5cfd1da;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/syntax/path_closed_structure.ma b/matita/matita/contribs/lambdadelta/delayed_updating/syntax/path_closed_structure.ma
index 44554b79e..ab812e9b2 100644
--- a/matita/matita/contribs/lambdadelta/delayed_updating/syntax/path_closed_structure.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/syntax/path_closed_structure.ma
@@ -21,7 +21,7 @@ include "delayed_updating/syntax/path_depth.ma".
 (* Constructions with structure *********************************************)
 
 lemma path_closed_structure_depth (o) (p):
-      ⊗p ϵ 𝐂❨o,♭p❩.
+      ⊗p ϵ 𝐂❨o,♭p,𝟎❩.
 #o #p elim p -p // *
 /2 width=1 by pcc_L_dx, pcc_A_dx, pcc_S_dx/
 qed.