-lemma lsubc_drop_O1_trans: â\88\80RP,G,L1,L2. G â\8a¢ L1 â«\83[RP] L2 â\86\92 â\88\80K2,s,e. â\87©[s, 0, e] L2 ≡ K2 →
- â\88\83â\88\83K1. â\87©[s, 0, e] L1 ≡ K1 & G ⊢ K1 ⫃[RP] K2.
+lemma lsubc_drop_O1_trans: â\88\80RP,G,L1,L2. G â\8a¢ L1 â«\83[RP] L2 â\86\92 â\88\80K2,s,e. â¬\87[s, 0, e] L2 ≡ K2 →
+ â\88\83â\88\83K1. â¬\87[s, 0, e] L1 ≡ K1 & G ⊢ K1 ⫃[RP] K2.