-lemma rsx_lpx_trans (h) (G):
- ∀L1,T. G ⊢ ⬈*[h,T] 𝐒⦃L1⦄ →
- â\88\80L2. â¦\83G,L1â¦\84 â\8a¢ â¬\88[h] L2 â\86\92 G â\8a¢ â¬\88*[h,T] ð\9d\90\92â¦\83L2â¦\84.
-#h #G #L1 #T #H @(rsx_ind … H) -L1 #L1 #HL1 #IHL1 #L2 #HL12
-elim (rdeq_dec L1 L2 T) /3 width=4 by rsx_rdeq_trans/
+lemma rsx_lpx_trans (G):
+ ∀L1,T. G ⊢ ⬈*𝐒[T] L1 →
+ â\88\80L2. â\9d¨G,L1â\9d© â\8a¢ â¬\88 L2 â\86\92 G â\8a¢ â¬\88*ð\9d\90\92[T] L2.
+#G #L1 #T #H @(rsx_ind … H) -L1 #L1 #HL1 #IHL1 #L2 #HL12
+elim (reqx_dec … L1 L2 T) /3 width=4 by rsx_reqx_trans/