Liber Abaci

The Liber Abaci or Liber Abbaci 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.

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Source: Wikipedia · Image: Wikimedia Commons · Public domain

GOLDENSPIRAL

The mathematics of beauty — Fibonacci, the golden ratio, and the patterns that shape nature, art, and design.

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