| n = n0, 2exp-size(n1), 2exp-size(n), n < minsize ⊦ ⟪n := n * 2⟫ (2exp-size(n) ∧ (n ≥ minsize ⊃ 0;minsize - n) < (n0 ≥ minsize ⊃ 0;minsize - n0)) |
n = n0, 2exp-size(n), 2exp-size(n1), n < minsize ⊦ 2exp-size(n * 2) ∧ (n * 2 ≥ minsize ⊃ 0;minsize - n * 2) < (n0 ≥ minsize ⊃ 0;minsize - n0)