-lemma csx_inv_lift: ∀h,g,G,L2,L1,T1,s,d,e. ⦃G, L1⦄ ⊢ ⬊*[h, g] T1 →
- â\88\80T2. â\87©[s, d, e] L1 â\89¡ L2 â\86\92 â\87§[d, e] T2 â\89¡ T1 â\86\92 â¦\83G, L2â¦\84 â\8a¢ â¬\8a*[h, g] T2.
-#h #g #G #L2 #L1 #T1 #s #d #e #H elim H -T1 #T1 #_ #IHT1 #T2 #HL12 #HT21
+lemma csx_inv_lift: ∀h,o,G,L2,L1,T1,c,l,k. ⦃G, L1⦄ ⊢ ⬊*[h, o] T1 →
+ â\88\80T2. â¬\87[c, l, k] L1 â\89¡ L2 â\86\92 â¬\86[l, k] T2 â\89¡ T1 â\86\92 â¦\83G, L2â¦\84 â\8a¢ â¬\8a*[h, o] T2.
+#h #o #G #L2 #L1 #T1 #c #l #k #H elim H -T1 #T1 #_ #IHT1 #T2 #HL12 #HT21