(* 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\98 T2 â\86\92 â\99¯{T1} = â\99¯{T2}.
+lemma lifts_fwd_tw: â\88\80f,T1,T2. â\87§*[f] T1 â\89\98 T2 â\86\92 â\99¯â\9d¨T1â\9d© = â\99¯â\9d¨T2â\9d©.
#f #T1 #T2 #H elim H -f -T1 -T2 normalize //
qed-.