(* *)
(**************************************************************************)
-include "Basic_2/substitution/ldrop_ldrop.ma".
-include "Basic_2/unfold/ldrops.ma".
+include "basic_2/substitution/ldrop_ldrop.ma".
+include "basic_2/unfold/ldrops.ma".
(* GENERIC LOCAL ENVIRONMENT SLICING ****************************************)
lemma ldrops_ldrop_trans: ∀L1,L,des. ⇩*[des] L1 ≡ L → ∀L2,i. ⇩[0, i] L ≡ L2 →
∃∃L0,des0,i0. ⇩[0, i0] L1 ≡ L0 & ⇩*[des0] L0 ≡ L2 &
- @[i] des ≡ i0 & des ▭ i ≡ des0.
+ @⦃i, des⦄ ≡ i0 & des ▭ i ≡ des0.
#L1 #L #des #H elim H -L1 -L -des
[ /2 width=7/
| #L1 #L3 #L #des3 #d #e #_ #HL3 #IHL13 #L2 #i #HL2