(* Properties with generic slicing for local environments *******************)
-lemma fqup_drops_succ: â\88\80b,G,K,T,i,L,U. â¬\87*[⫯i] L â\89\98 K â\86\92 â¬\86*[⫯i] T ≘ U →
+lemma fqup_drops_succ: â\88\80b,G,K,T,i,L,U. â¬\87*[â\86\91i] L â\89\98 K â\86\92 â¬\86*[â\86\91i] T ≘ U →
⦃G, L, U⦄ ⊐+[b] ⦃G, K, T⦄.
#b #G #K #T #i elim i -i
[ #L #U #HLK #HTU elim (drops_inv_succ … HLK) -HLK
/3 width=2 by fqu_fqup, fqu_drop/
| #l #IH #L #U #HLK #HTU elim (drops_inv_succ … HLK) -HLK
#I #Y #HY #H destruct
- elim (lifts_split_trans â\80¦ HTU â\80¦ (ð\9d\90\94â\9d´â«¯l❵) (𝐔❴1❵)) -HTU
+ elim (lifts_split_trans â\80¦ HTU â\80¦ (ð\9d\90\94â\9d´â\86\91l❵) (𝐔❴1❵)) -HTU
/4 width=5 by fqup_strap2, fqu_drop/
]
qed.