lemma lfpxs_cpx_conf: ∀h,G. s_r_confluent1 … (cpx h G) (lfpxs h G).
#h #G #L1 #T1 #T2 #HT12 #L2 #H
elim (tc_lfxs_inv_lex_lfeq … H) -H #L #HL1 #HL2
lemma lfpxs_cpx_conf: ∀h,G. s_r_confluent1 … (cpx h G) (lfpxs h G).
#h #G #L1 #T1 #T2 #HT12 #L2 #H
elim (tc_lfxs_inv_lex_lfeq … H) -H #L #HL1 #HL2