Napier (1550-1617), [162]
Newton (1642-1727), [177]
Numerical computations, [43], [44], 46
One-to-one correspondence, [1], [2], 3, [4], [5], [6], [7], [9], [10], [11], [24], [36], 87, [43], [60], [104], [106], [184]
Opposite sides of a hexagon, [70]
Opposite sides of a quadrilateral, 28, [29]
Order of a form, [7], [10], [11], [12], [13], 14, [15], [16], [17], [18], [19], [20], [21]
Pappus (fourth century A.D.), 161