Liber abaci

Leonardo of Pisa (Fibonacci), Book of Calculation

Leonardo learned 'the art of the nine Indian figures' (modus Indorum) at Bugia and on his travels; chapter 1 begins 'Novem figure indorum he sunt 9 8 7 6 5 4 3 2 1' and with zero writes any number.

Language

Latin

Date

1202–1228 CE

Author

Leonardus Pisanus (Fibonacci)

Text

not yet digitised (catalogue entry)