The Hindu-Arabic Numerals c12.147

c12.147

³ French algorismus, c. 1275, for the first of these forms. Cappelli, thirteenth, fourteenth, fifteenth (3), and seventeenth centuries, respectively. The last three are taken from *Byzantinische Analekten*, J. L. Heiberg, being forms of the fifteenth century, but not at all common. Ϙ was the old Greek symbol for 90.