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www.britannica.com/biography/Fibonacci

Fibonacci, also called Leonardo Pisano, English Leonardo of Pisa, original name Leonardo Fibonacci, (born c. 1170, Pisa?—died after 1240), medieval Italian mathematician who wrote Liber abaci (1202; “Book of the Abacus”), the first European work on Indian and Arabian mathematics.. Life. Little is known about Fibonacci’s life beyond the few facts given in his mathematical writings.

www.thoughtco.com/leonardo-pisano-fibonacci-biography-2312397

Leonardo Pisano Fibonacci (1170–1240 or 1250) was an Italian number theorist. He introduced the world to such wide-ranging mathematical concepts as what is now known as the Arabic numbering system, the concept of square roots, number sequencing, and even math word problems.

en.wikipedia.org/wiki/Fibonacci

The name he is commonly called, Fibonacci, was made up in 1838 by the Franco-Italian historian Guillaume Libri and is short for filius Bonacci ("son of Bonacci"). He is also known as Leonardo Bonacci, Leonardo of Pisa, or Leonardo Bigollo Pisano ("Leonardo the Traveller from Pisa").

www.thefamouspeople.com/profiles/leonardo-fibonacci-3791.php

Leonardo Fibonacci was a 13th century Italian mathematician. This biography of Leonardo Fibonacci provides detailed information about his childhood, life, achievements, works & timeline.

mathshistory.st-andrews.ac.uk/Biographies/Fibonacci.html

Leonardo Pisano is better known by his nickname Fibonacci. He was the son of Guilielmo and a member of the Bonacci family. Fibonacci himself sometimes used the name Bigollo, which may mean good-for-nothing or a traveller.

study.com/.../leonardo-of-pisa-fibonacci-biography-facts-accomplishments.html

Leonardo Fibonacci, also known as Leonardo of Pisa or Leonardo Pisano, is better known as Fibonacci today. Fibonacci was an Italian-born mathematician. He was born around 1175 CE in Pisa, Italy.

biography.yourdictionary.com/leonardo-fibonacci

Leonardo Fibonacci facts: The Italian mathematician and merchant Leonardo Fibonacci (ca. 1180-ca. 1250), also known as Leonardo of Pisa, was the most original and capable mathematician of the medieval Christian world. Leonardo Fibonacci was born in Pisa an...

www.famousscientists.org/fibonacci-leonardo-of-pisa

Fibonacci lived in the Middle Ages. One consequence of this is his biographical details are rather sketchy. Born in the Italian city of Pisa sometime in the years 1170 to 1175, we know his given name was Leonardo Bonacci. Later he became Leonardo of Pisa and then Fibonacci. He was not known as Fibonacci in his lifetime.

www.encyclopedia.com/.../mathematics-biographies/leonardo-fibonacci

Leonardo Fibonacci. The Italian mathematician and merchant Leonardo Fibonacci (ca. 1180-ca. 1250), also known as Leonardo of Pisa, was the most original and capable mathematician of the medieval Christian world. Leonardo Fibonacci was born in Pisa and was brought up in Bougie, Algeria, where his father was a warehouse official.

famous-mathematicians.org/leonardo-pisano-bigollo

Leonardo Pisano Bigollo was an Italian mathematician. He is usually better known by his nickname, Fibonacci, and is considered to be among the foremost European mathematicians of the medieval era. He was instrumental in bringing the widespread use of Arabic numerals to the West.