X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fcomputation%2Flsubc_ldrops.ma;h=7f2fd1cccde7d8128e33b090f407cd3720aca767;hb=f282b35b958c9602fb1f47e5677b5805a046ac76;hp=7acb1fc7acf6f24175b8f20bf1e0b80e479051b7;hpb=cb5ca7ea4e826e9331eabeaea44353caab00071e;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/lsubc_ldrops.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/lsubc_ldrops.ma
index 7acb1fc7a..7f2fd1ccc 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/lsubc_ldrops.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/lsubc_ldrops.ma
@@ -21,8 +21,8 @@ include "basic_2/computation/lsubc_ldrop.ma".
 (* Basic_1: was: csubc_drop1_conf_rev *)
 lemma ldrops_lsubc_trans: ∀RR,RS,RP.
                           acp RR RS RP → acr RR RS RP (λG,L,T. RP G L T) →
-                          ∀G,L1,K1,des. ⇩*[Ⓕ, des] L1 ≡ K1 → ∀K2. G ⊢ K1 ⊑[RP] K2 →
-                          ∃∃L2. G ⊢ L1 ⊑[RP] L2 & ⇩*[Ⓕ, des] L2 ≡ K2.
+                          ∀G,L1,K1,des. ⇩*[Ⓕ, des] L1 ≡ K1 → ∀K2. G ⊢ K1 ⫃[RP] K2 →
+                          ∃∃L2. G ⊢ L1 ⫃[RP] L2 & ⇩*[Ⓕ, des] L2 ≡ K2.
 #RR #RS #RP #Hacp #Hacr #G #L1 #K1 #des #H elim H -L1 -K1 -des
 [ /2 width=3 by ldrops_nil, ex2_intro/
 | #L1 #L #K1 #des #d #e #_ #HLK1 #IHL #K2 #HK12