update in delayed_updating

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

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ibfr.ma b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ibfr.ma
index 700440011926ecc3fc22b55c9f5d69af4d7d107c..d0f0eb1c44b48bd12161f074512f07518317cf50 100644 (file)
--- a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ibfr.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ibfr.ma
@@ -27,7 +27,7 @@ include "ground/xoa/ex_6_5.ma".
 definition ibfr (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←🠡[𝐮❨↑(m+n)❩](t1⋔(p◖𝗦))] ⇔ t2
 .