(* Basic_2A1: uses: lpr_fpb *)
lemma lpr_fwd_fpbc (h) (G) (T):
- â\88\80L1,L2. â\9dªG,L1â\9d« â\8a¢ â\9e¡[h,0] L2 â\86\92 (L1 â\89\85[T] L2 â\86\92 â\8a¥) â\86\92 â\9dªG,L1,Tâ\9d« â\89» â\9dªG,L2,Tâ\9d«.
+ â\88\80L1,L2. â\9d¨G,L1â\9d© â\8a¢ â\9e¡[h,0] L2 â\86\92 (L1 â\89\85[T] L2 â\86\92 â\8a¥) â\86\92 â\9d¨G,L1,Tâ\9d© â\89» â\9d¨G,L2,Tâ\9d©.
/3 width=2 by lpx_fpbc, lpr_fwd_lpx/ qed-.