| # nσ = ∞, nσ[n1] = n ∧ (∀ m. nσ[m] = n → ¬ n1 < m), stutf(nσ), n ≤ nσ[m], ∀ m0. m < m0 → nσ[m0] = nσ[m] + 1 ⊦ nσ[n1 + 1] = n + 1 |
# nσ = ∞, stutf(nσ), nσ[n1] ≤ nσ[m], ∀ m. nσ[m] = nσ[n1] → ¬ n1 < m, ∀ m0. m < m0 → nσ[m0] = nσ[m] + 1 ⊦ nσ[n1 + 1] = nσ[n1] + 1