(* PLUS-ITERATED SUPCLOSURE *************************************************)
(* Properties with generic slicing for local environments *******************)
-(*
+
lemma fqup_drops_succ: ∀G,K,T,l,L,U. ⬇*[⫯l] L ≡ K → ⬆*[⫯l] T ≡ U →
⦃G, L, U⦄ ⊐+ ⦃G, K, T⦄.
#G #K #T #l elim l -l
| /3 width=5 by fqup_strap1, fqup_drops_succ/
]
qed-.
-*)
-axiom fqup_lref: ∀I,G,L,K,V,i. ⬇*[i] L ≡ K.ⓑ{I}V → ⦃G, L, #i⦄ ⊐+ ⦃G, K, V⦄.
-(* /2 width=6 by fqup_drops_strap1/ qed. *)
+
+lemma fqup_lref: ∀I,G,L,K,V,i. ⬇*[i] L ≡ K.ⓑ{I}V → ⦃G, L, #i⦄ ⊐+ ⦃G, K, V⦄.
+/2 width=6 by fqup_drops_strap1/ qed.