-lemma lpxs_rdneq_fpbg: ∀h,G,L1,L2,T. ⦃G,L1⦄ ⊢ ⬈*[h] L2 →
- (L1 ≛[T] L2 → ⊥) → ⦃G,L1,T⦄ >[h] ⦃G,L2,T⦄.
-#h #G #L1 #L2 #T #H #H0
-elim (lpxs_rdneq_inv_step_sn … H … H0) -H -H0
-/4 width=7 by fpb_lpx, lpxs_fdeq_fpbs, fdeq_intro_sn, ex2_3_intro/
+lemma lpxs_rneqx_fpbg:
+ ∀G,L1,L2,T. ❪G,L1❫ ⊢ ⬈* L2 →
+ (L1 ≅[T] L2 → ⊥) → ❪G,L1,T❫ > ❪G,L2,T❫.
+#G #L1 #L2 #T #H #H0
+elim (lpxs_rneqg_inv_step_sn … H … H0) -H -H0
+/4 width=7 by fpb_lpx, lpxs_feqx_fpbs, feqg_intro_sn, ex2_3_intro/