(* Basic properties *********************************************************)
+lemma fw_unfold (G) (L) (T): ♯❨L❩ + ♯❨T❩ = ♯❨G,L,T❩.
+// qed.
+
(* Basic_1: was: flt_shift *)
lemma fw_shift: ∀p,I,G,K,V,T. ♯❨G,K.ⓑ[I]V,T❩ < ♯❨G,K,ⓑ[p,I]V.T❩.
-normalize /2 width=1 by monotonic_le_plus_r/
-qed.
+/2 width=1 by plt_plus_bi_sn/ qed.
lemma fw_clear: ∀p,I1,I2,G,K,V,T. ♯❨G,K.ⓤ[I1],T❩ < ♯❨G,K,ⓑ[p,I2]V.T❩.
-normalize /4 width=1 by monotonic_le_plus_r, le_S_S/
-qed.
+/2 width=1 by plt_plus_bi_sn/ qed.
lemma fw_tpair_sn: ∀I,G,L,V,T. ♯❨G,L,V❩ < ♯❨G,L,②[I]V.T❩.
-normalize in ⊢ (?→?→?→?→?→?%%); //
-qed.
+/2 width=1 by plt_plus_bi_sn/ qed.
lemma fw_tpair_dx: ∀I,G,L,V,T. ♯❨G,L,T❩ < ♯❨G,L,②[I]V.T❩.
-normalize in ⊢ (?→?→?→?→?→?%%); //
-qed.
+/2 width=1 by plt_plus_bi_sn/ qed.
lemma fw_lpair_sn: ∀I,G,L,V,T. ♯❨G,L,V❩ < ♯❨G,L.ⓑ[I]V,T❩.
-normalize /3 width=1 by monotonic_lt_plus_l, monotonic_le_plus_r/
-qed.
+// qed.
(* Basic_1: removed theorems 7:
flt_thead_sx flt_thead_dx flt_trans