| N = N'' + 1 until A'' ≠ A, □ A = a, n = N + 1, boolvar → a = a1 ∧ n = n0, \A ∀ N, A, a. N < n → □ A = a → ¬ N = N'' +1 until A'' ≠ A ⊦ |
N = N'' + 1 until A'' ≠ A, □ A = a, n = N + 1, boolvar → a = a1 ∧ N + 1 = n0, \A ∀ N, A, a. N < n → □ A = a → ¬ N = N'' +1 until A'' ≠ A ⊦