(* Basic_2A1: was: lprs_lpxs *)
(* Note: original proof uses lpr_fwd_lpx and monotonic_TC *)
lemma lprs_fwd_lpxs (h) (G):
- â\88\80L1,L2. â\9dªG,L1â\9d« â\8a¢ â\9e¡*[h,0] L2 â\86\92 â\9dªG,L1â\9d« ⊢ ⬈* L2.
+ â\88\80L1,L2. â\9d¨G,L1â\9d© â\8a¢ â\9e¡*[h,0] L2 â\86\92 â\9d¨G,L1â\9d© ⊢ ⬈* L2.
/3 width=3 by cpms_fwd_cpxs, lex_co/ qed-.