X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fdelayed_updating%2Fsyntax%2Fpath_balanced.ma;h=ffdbf93e48de80e3b56fd6ac260ef64a3449c006;hb=cc178d85bc4fec05b6a9dd176f338b3275beb3d9;hp=e28a95101395992539af1eb97f43d94f0f8cff85;hpb=5489d0b66ed7bff17b9dedb89708f57f1d542adc;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/syntax/path_balanced.ma b/matita/matita/contribs/lambdadelta/delayed_updating/syntax/path_balanced.ma
index e28a95101..ffdbf93e4 100644
--- a/matita/matita/contribs/lambdadelta/delayed_updating/syntax/path_balanced.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/syntax/path_balanced.ma
@@ -19,7 +19,7 @@ include "delayed_updating/notation/relations/predicate_squarecap_1.ma".
 
 (* This condition applies to a structural path *)
 inductive pbc: predicate path ≝
-| pbc_empty: pbc 𝐞  
+| pbc_empty: pbc (𝐞)  
 | pbc_redex: ∀b. pbc b → pbc (𝗔◗b◖𝗟)
 | pbc_after: ∀b1,b2. pbc b1 → pbc b2 → pbc (b1●b2)
 .