(* Basic_2A1: uses: fpbq_aaa_conf *)
lemma fpb_aaa_conf:
- â\88\80G1,G2,L1,L2,T1,T2. â\9dªG1,L1,T1â\9d« â\89½ â\9dªG2,L2,T2â\9d« →
- â\88\80A1. â\9dªG1,L1â\9d« â\8a¢ T1 â\81\9d A1 â\86\92 â\88\83A2. â\9dªG2,L2â\9d« ⊢ T2 ⁝ A2.
+ â\88\80G1,G2,L1,L2,T1,T2. â\9d¨G1,L1,T1â\9d© â\89½ â\9d¨G2,L2,T2â\9d© →
+ â\88\80A1. â\9d¨G1,L1â\9d© â\8a¢ T1 â\81\9d A1 â\86\92 â\88\83A2. â\9d¨G2,L2â\9d© ⊢ T2 ⁝ A2.
#G1 #G2 #L1 #L2 #T1 #T2 #H #A1 #HA1
elim (fpb_inv_req … H) -H #L0 #L #T #H1 #HT2 #HL0 #HL02
elim (aaa_fquq_conf … H1 … HA1) -G1 -L1 -T1 -A1 #A2 #HA2