X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fdelayed_updating%2Freduction%2Fifr.ma;fp=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fdelayed_updating%2Freduction%2Fifr.ma;h=90cd693c3a0777438aee4cc4ea299f1d2cfe7dcb;hb=00fca351072c2dba11b71c14b1169d303fd6836f;hp=4e70a6c43212df751914c4ee2321a32997ba6acf;hpb=6f1b6f85a78d4c8da42f035f433fe4b85962bd9b;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ifr.ma b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ifr.ma
index 4e70a6c43..90cd693c3 100644
--- a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ifr.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ifr.ma
@@ -12,8 +12,8 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "delayed_updating/unwind/unwind2_prototerm.ma".
 include "delayed_updating/substitution/fsubst.ma".
-include "delayed_updating/substitution/lift_prototerm.ma".
 include "delayed_updating/syntax/prototerm_equivalence.ma".
 include "delayed_updating/syntax/path_head.ma".
 include "delayed_updating/syntax/path_depth.ma".
@@ -26,7 +26,7 @@ definition ifr (p) (q): relation2 prototerm prototerm ≝
            λt1,t2. ∃n:pnat.
            let r ≝ p●𝗔◗𝗟◗q in
            ∧∧ (𝗟◗q)ᴿ = ↳[n](rᴿ) & r◖𝗱n ϵ t1 &
-              t1[⋔r←↑[𝐮❨♭(𝗟◗q)❩](t1⋔(p◖𝗦))] ⇔ t2
+              t1[⋔r←▼[𝐮❨♭(𝗟◗q)❩](t1⋔(p◖𝗦))] ⇔ t2
 .
 
 interpretation