Leonardo da Pisa, known to us as Leonardo Fibonacci, was born in Pisa in 1175. The nickname "Fibonacci" came from "Filius Bonacci" (son of Bonacci). Fibonacci also sometimes used the name Bigollo, which means good-for-nothing or a traveler. Fibonacci was educated in mathematics by Arab masters while his father, Guilielmo Bonacci, held a diplomatic post in northern Africa. His father's job was to represent the merchants of the Republic of Pisa since it was in a trading business with Bugia, later called Bougie, and now called Bejaia.
<Tab/>About 1200 Leonardo returned to Pi…
