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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

Fibonacci became a guest of Emperor Frederick II, who enjoyed mathematics and science. In 1240, the Republic of Pisa honored Fibonacci (referred to as Leonardo Bigollo) by granting him a salary in a decree that recognized him for the services that he had given to the city as an advisor on matters of accounting and instruction to citizens.

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.

www-history.mcs.st-and.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.

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.

study.com/academy/lesson/leonardo-of-pisa-fibonacci...

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.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fibBio.html

Fibonacci, Leonardo of Pisa, Leonardo Pisano, lived in Pisa around 1200 and gave his name to the Fibonacci numbers. Who was he? What statues are there to see in Pisa? He played a major role in introducing our decimal number system and aritmetic methods into Europe to replace the old Roman numerals.

www.nndb.com/people/922/000095637/bibliography

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