(* Forward lemmas with weight for terms *************************************)
(* Basic_2A1: includes: lift_fwd_tw *)
-lemma lifts_fwd_tw: â\88\80f,T1,T2. â¬\86*[f] T1 â\89¡ T2 → ♯{T1} = ♯{T2}.
+lemma lifts_fwd_tw: â\88\80f,T1,T2. â¬\86*[f] T1 â\89\98 T2 → ♯{T1} = ♯{T2}.
#f #T1 #T2 #H elim H -f -T1 -T2 normalize //
qed-.