n0 < 2 * 2^ m, 2^ m < 2 * 2^ m, 2^ m ≤ n0 ⊦ n0 = 0, ∃ m0. 2^ m0 ≤ n0 + 1 ∧ n0 + 1 < 2 * 2^ m0, 2^ m ≤ n0 + 1 ∧ n0 + 1 < 2 * 2^ m
Used terms: m