(* Properies on local environment slicing ***********************************)
lemma lpx_ldrop_conf: ∀h,g,G. dropable_sn (lpx h g G).
-/3 width=5 by lpx_sn_deliftable_dropable, cpx_inv_lift1/ qed-.
+/3 width=6 by lpx_sn_deliftable_dropable, cpx_inv_lift1/ qed-.
lemma ldrop_lpx_trans: ∀h,g,G. dedropable_sn (lpx h g G).
-/3 width=9 by lpx_sn_liftable_dedropable, cpx_lift/ qed-.
+/3 width=10 by lpx_sn_liftable_dedropable, cpx_lift/ qed-.
lemma lpx_ldrop_trans_O1: ∀h,g,G. dropable_dx (lpx h g G).
/2 width=3 by lpx_sn_dropable/ qed-.