+(* Basic properties *********************************************************)
+
+lemma lw_pair: ∀I,L,V. #{L} < #{(L.ⓑ{I}V)}.
+/3 width=1/ qed.
+
+(* Basic eliminators ********************************************************)
+
+axiom lw_ind: ∀R:predicate lenv.
+ (∀L2. (∀L1. #{L1} < #{L2} → R L1) → R L2) →
+ ∀L. R L.
+
+(* Basic_1: removed theorems 2: clt_cong clt_head clt_thead *)
+(* Basic_1: note: clt_thead should be renamed clt_ctail *)