Liber Abaci

A page of the Liber Abaci from the National Central Library. The list on the right shows the numbers 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377 (the Fibonacci sequence). The 2, 8, and 9 resemble Arabic numerals more than Eastern Arabic numerals or Indian numerals.

The Liber Abaci or Liber Abbaci[1] (Latin for "The Book of Calculation") was a 1202 Latin work on arithmetic by Leonardo of Pisa, posthumously known as Fibonacci. It is primarily famous for introducing both base-10 positional notation and the symbols known as Arabic numerals in Europe.

  1. ^ "Fibonacci's Liber Abaci (Book of Calculation)", The University of Utah, 13 December 2009, retrieved 2018-11-27