-lemma nlift_inv_bind: â\88\80a,I,W,U,d,e. (â\88\80X. â\87§[d, e] X ≡ ⓑ{a,I}W.U → ⊥) →
- (â\88\80V. â\87§[d, e] V â\89¡ W â\86\92 â\8a¥) â\88¨ (â\88\80T. â\87§[d+1, e] T ≡ U → ⊥).
+lemma nlift_inv_bind: â\88\80a,I,W,U,d,e. (â\88\80X. â¬\86[d, e] X ≡ ⓑ{a,I}W.U → ⊥) →
+ (â\88\80V. â¬\86[d, e] V â\89¡ W â\86\92 â\8a¥) â\88¨ (â\88\80T. â¬\86[d+1, e] T ≡ U → ⊥).