update in basic_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / etc_2A1 / nta / nta_sta.etc

diff --git a/matita/matita/contribs/lambdadelta/basic_2/etc_2A1/nta/nta_sta.etc b/matita/matita/contribs/lambdadelta/basic_2/etc_2A1/nta/nta_sta.etc
deleted file mode 100644 (file)
index 6268b98..0000000
--- a/matita/matita/contribs/lambdadelta/basic_2/etc_2A1/nta/nta_sta.etc
+++ /dev/null
@@ -1,42 +0,0 @@
-(**************************************************************************)
-(*       ___                                                              *)
-(*      ||M||                                                             *)
-(*      ||A||       A project by Andrea Asperti                           *)
-(*      ||T||                                                             *)
-(*      ||I||       Developers:                                           *)
-(*      ||T||         The HELM team.                                      *)
-(*      ||A||         http://helm.cs.unibo.it                             *)
-(*      \   /                                                             *)
-(*       \ /        This file is distributed under the terms of the       *)
-(*        v         GNU General Public License Version 2                  *)
-(*                                                                        *)
-(**************************************************************************)
-
-include "basic_2/static/sta.ma".
-include "basic_2/equivalence/cpcs_cpcs.ma".
-include "basic_2/dynamic/nta.ma".
-
-(* NATIVE TYPE ASSIGNMENT ON TERMS ******************************************)
-
-(* Properties on static type assignment *************************************)
-
-lemma nta_fwd_sta: ∀h,L,T,U. ⦃h, L⦄ ⊢ T : U →
-                   ∃∃U0. ⦃h, L⦄ ⊢ T • U0 & L ⊢ U0 ⬌* U.
-#h #L #T #U #H elim H -L -T -U
-[ /2 width=3/
-| #L #K #V #W1 #V1 #i #HLK #_ #HWV1 * #W0 #HVW0 #HW01
-  elim (lift_total W0 0 (i+1)) #V0 #HWV0
-  lapply (ldrop_fwd_ldrop2 … HLK) #HLK0
-  lapply (cpcs_lift … HLK0 … HWV0 … HWV1 HW01) -HLK0 -HWV1 -HW01 /3 width=6/
-| #L #K #W #V1 #W1 #i #HLK #HWV1 #HW1 * /3 width=6/
-| #I #L #V #W #T #U #_ #_ * #W0 #_ #_ * /3 width=3/
-| #L #V #W #T #U #_ #_ * #W0 #_ #HW0 * #X #H #HX
-  elim (sta_inv_bind1 … H) -H #U0 #HTU0 #H destruct
-  @(ex2_1_intro … (ⓐV.ⓛW.U0)) /2 width=1/ /3 width=1/
-| #L #V #W #T #U #_ #_ * #U0 #HTU0 #HU0 #_ -W
-  @(ex2_1_intro … (ⓐV.U0)) /2 width=1/
-| #L #T #U #HTU * #U0 #HTU0 #HU0 /3 width=3/
-| #L #T #U1 #U2 #V2 #_ #HU12 #_ * #U0 #HTU0 #HU01 #_
-  lapply (cpcs_trans … HU01 … HU12) -U1 /2 width=3/
-]
-qed-.