update in ground

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

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/dfr.ma b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/dfr.ma
index 3c328fcb206fb067dfa1e54ebf809d400a1ee856..b7f900b6c6a870b1b7f1c6c27692918525e0d703 100644 (file)
--- a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/dfr.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/dfr.ma
@@ -28,8 +28,8 @@ include "ground/xoa/and_4.ma".
 definition dfr (p) (q): relation2 prototerm prototerm ≝
            λt1,t2. ∃∃b,n.
            let r ≝ p●𝗔◗b●𝗟◗q in
-           ∧∧ ⊗b ϵ 𝐁 & ↑❘q❘ = (▼[r]𝐢)@❨n❩ & r◖𝗱n ϵ t1 &
-              t1[â\8b\94râ\86\90ð\9d\9b\97(n+â\9d\98bâ\9d\98).(t1⋔(p◖𝗦))] ⇔ t2
+           ∧∧ (⊗b ϵ 𝐁 ∧ 𝟎 = ♭b) & ↑♭q = (▼[r]𝐢)＠⧣❨n❩ & r◖𝗱n ϵ t1 &
+              t1[â\8b\94râ\86\90ð\9d\9b\97(n+â\99­b).(t1⋔(p◖𝗦))] ⇔ t2
 .
 
 interpretation