| mk(rs, f, g) = ∅, r ∈ rs ⊦ # rs = 0, g(r) = a, rs = ∅ |
⊦ Ha0 = Ha1 ↔ (∀ r. (r ∈ Ha0 ↔ r ∈ Ha1) ∧ (r ∈ Ha0 → Ha0[r]o = Ha1[r]o ∧ Ha0[r]a = Ha1[r]a))
r ∈ rs, ∀ r. (r ∈ mk(rs, f, g) ↔ r ∈ ∅) ∧ (r ∈ mk(rs, f, g) → mk(rs, f, g)[r]o = (∅)[r]o ∧ mk(rs, f, g)[r]a = (∅)[r]a) ⊦ # rs = 0, g(r) = a, rs = ∅
Used terms: ∅, mk(rs, f, g)