update in delayed_updating

[helm.git] / matita / matita / contribs / lambdadelta / delayed_updating / substitution / fsubst.ma

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/substitution/fsubst.ma b/matita/matita/contribs/lambdadelta/delayed_updating/substitution/fsubst.ma
index 0ff05222bc6e2bb82958d0dac77077b1f76b48ff..53f18be3120d8f550ee58b5c70e97186f9926d8b 100644 (file)
--- a/matita/matita/contribs/lambdadelta/delayed_updating/substitution/fsubst.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/substitution/fsubst.ma
@@ -20,8 +20,8 @@ include "delayed_updating/notation/functions/pitchforkleftarrow_3.ma".
 
 definition fsubst (p) (u): preterm → preterm ≝
            λt,q.
-           ∨∨ ∃∃r. r ϵ u & p ϵ ▵t & p;;r = q
-            | ∧∧ q ϵ t & (∀r. p;;r = q → ⊥) 
+           ∨∨ ∃∃r. r ϵ u & p ϵ ▵t & p●r = q
+            | ∧∧ q ϵ t & (∀r. p●r = q → ⊥)
 .
 
 interpretation