(* GENERIC RELOCATION FOR TERMS *********************************************)
-(* Forward lemmas on weight for terms ***************************************)
+(* Forward lemmas with weight for terms *************************************)
(* Basic_2A1: includes: lift_fwd_tw *)
-lemma lifts_fwd_tw: ∀T1,T2,t. ⬆*[t] T1 ≡ T2 → ♯{T1} = ♯{T2}.
-#T1 #T2 #t #H elim H -T1 -T2 -t normalize //
+lemma lifts_fwd_tw: ∀T1,T2,f. ⬆*[f] T1 ≡ T2 → ♯{T1} = ♯{T2}.
+#T1 #T2 #f #H elim H -T1 -T2 -f normalize //
qed-.