+++ /dev/null
-(**************************************************************************)
-(* ___ *)
-(* ||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/relocation/llor.ma".
-include "basic_2/substitution/lleq_alt.ma".
-
-(* LAZY EQUIVALENCE FOR LOCAL ENVIRONMENTS **********************************)
-
-(* Properties on poinwise union for local environments **********************)
-
-lemma llor_lleq_O: ∀T,L1,L2,L. L1 ⩖[T] L2 ≡ L → |L1| ≤ |L2| → |L2| = |L| → L2 ⋕[T, yinj 0] L.
-#T #L1 @(f2_ind … rfw … L1 T) -L1 -T
-#n #IH #L1 #T #Hn #L2 #L #H #HL12 #HL2 elim (llor_inv_alt … H) // destruct
-#HL1 #IHT @lleq_intro_alt //
-#I2 #I #K2 #K #V2 #V #i #_ #HnT #HLK2 #HLK lapply (ldrop_fwd_length_lt2 … HLK)
-#Hi elim (ldrop_O1_lt L1 i) //
-#I1 #K1 #V1 #HLK1 elim (IHT … HLK1 HLK) >HL1 >HL2 <minus_n_n -IHT -HLK1 -HLK
-[
-| * #I0 #K0 #V0 #_ #HLK0 lapply (ldrop_mono … HLK0 … HLK2) -HLK0 -HLK2
- #H1 #H2 #H3 #_ destruct
-
-
-
-