- lambdadelta: last recursive part of preservation finally proved!

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / unwind / sstas_lift.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/unwind/sstas_lift.ma b/matita/matita/contribs/lambdadelta/basic_2/unwind/sstas_lift.ma
index e8ba22729c74a568962c1fc1cb47c838658e3934..d8d253e127a06f479e87964d4be0344852aafe5f 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/unwind/sstas_lift.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/unwind/sstas_lift.ma
@@ -19,9 +19,9 @@ include "basic_2/unwind/sstas.ma".
 
 (* Advanced forward lemmas **************************************************)
 
-lemma sstas_fwd_correct: ∀h,g,L,T1,U1,l1. ⦃h, L⦄ ⊢ T1 •[g, l1] U1 →
+lemma sstas_fwd_correct: ∀h,g,L,T1,U1,l1. ⦃h, L⦄ ⊢ T1 •[g] ⦃l1, U1⦄ →
                          ∀T2. ⦃h, L⦄ ⊢ T1 •*[g] T2 →
-                         ∃∃U2,l2. ⦃h, L⦄ ⊢ T2 •[g, l2] U2.
+                         ∃∃U2,l2. ⦃h, L⦄ ⊢ T2 •[g] ⦃l2, U2⦄.
 #h #g #L #T1 #U1 #l1 #HTU1 #T2 #H @(sstas_ind … H) -T2 [ /2 width=3/ ] -HTU1
 #T #T2 #l #_ #HT2 * #U #l0 #_ -l0
 elim (ssta_fwd_correct … HT2) -T /2 width=3/