(* Basic_2A1: was: lpr_lpx *)
lemma lpr_fwd_lpx (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 cpm_fwd_cpx, lex_co/ qed-.