(* *)
(**************************************************************************)
-include "Basic_2/unfold/ldrops_ldrop.ma".
+include "basic_2/unfold/ldrops_ldrop.ma".
(* GENERIC LOCAL ENVIRONMENT SLICING ****************************************)
(* Basic_1: was: drop1_trans *)
theorem ldrops_trans: ∀L,L2,des2. ⇩*[des2] L ≡ L2 → ∀L1,des1. ⇩*[des1] L1 ≡ L →
- ⇩*[des2 @ des1] L1 ≡ L2.
+ ⇩*[des2 @@ des1] L1 ≡ L2.
#L #L2 #des2 #H elim H -L -L2 -des2 // /3 width=3/
qed.