update in delayed_updating

[helm.git] / matita / matita / contribs / lambdadelta / delayed_updating / reduction / dbfr.ma

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/dbfr.ma b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/dbfr.ma
index 776696b24b95b58c6c89bbe84d850ec3927ace77..841baabb0c107cbcdcd5cfa25ba6eab296afeaa5 100644 (file)
--- a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/dbfr.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/dbfr.ma
@@ -26,7 +26,7 @@ include "ground/xoa/ex_6_5.ma".
 definition dbfr (r): relation2 prototerm prototerm ≝
            λt1,t2.
            ∃∃p,b,q,m,n. p●𝗔◗b●𝗟◗q = r &
-           ⊗b ϵ 𝐁 & b ϵ 𝐂❨Ⓕ,m❩ & q ϵ 𝐂❨Ⓕ,n❩ & r◖𝗱↑n ϵ t1 &
+           ⊗b ϵ 𝐁 & b ϵ 𝐂❨Ⓕ,m,𝟎❩ & q ϵ 𝐂❨Ⓕ,n,𝟎❩ & r◖𝗱↑n ϵ t1 &
            t1[⋔r←𝛕↑(m+n).(t1⋔(p◖𝗦))] ⇔ t2
 .