-lemma rpx_inv_lifts_bi (h) (G):
- ∀L1,L2,U. ❪G,L1❫ ⊢ ⬈[h,U] L2 → ∀b,f. 𝐔❪f❫ →
- ∀K1,K2. ⇩*[b,f] L1 ≘ K1 → ⇩*[b,f] L2 ≘ K2 →
- ∀T. ⇧*[f]T ≘ U → ❪G,K1❫ ⊢ ⬈[h,T] K2.
+lemma rpx_inv_lifts_bi (G):
+ ∀L1,L2,U. ❪G,L1❫ ⊢ ⬈[U] L2 → ∀b,f. 𝐔❪f❫ →
+ ∀K1,K2. ⇩*[b,f] L1 ≘ K1 → ⇩*[b,f] L2 ≘ K2 →
+ ∀T. ⇧*[f]T ≘ U → ❪G,K1❫ ⊢ ⬈[T] K2.