MATHEMATICIAN

Fibonacci

1170 - 1240

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Leonardo Bonacci (c. 1170 – c. 1240–50), commonly known as Fibonacci, was an Italian mathematician from the Republic of Pisa, considered to be "the most talented Western mathematician of the Middle Ages". The name he is commonly called, Fibonacci, is first found in a modern source in a 1838 text by the Franco-Italian mathematician Guglielmo Libri and is short for filius Bonacci ('son of Bonacci'). However, even as early as 1506, Perizolo, a notary of the Holy Roman Empire, mentions him as "Lionardo Fibonacci". Fibonacci popularized the Indo–Arabic numeral system in the Western world primarily through his composition in 1202 of Liber Abaci (Book of Calculation) and also introduced Europe to the sequence of Fibonacci numbers, which he used as an example in Liber Abaci. Read more on Wikipedia

His biography is available in different languages on Wikipedia. Fibonacci is the 7th most popular mathematician (up from 13th in 2019), the 15th most popular biography from Italy (up from 50th in 2019) and the 2nd most popular Italian Mathematician.

Fibonacci is most famous for the Fibonacci sequence, which is a sequence of numbers that starts with 0 and 1. The sequence progresses by adding the previous two numbers to get the next number.

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Among MATHEMATICIANS

Among mathematicians, Fibonacci ranks 7 out of 1,004. Before him are Archimedes, Gottfried Wilhelm Leibniz, Carl Friedrich Gauss, Blaise Pascal, Muhammad ibn Musa al-Khwarizmi, and Euclid. After him are Ada Lovelace, Leonhard Euler, Omar Khayyam, John Forbes Nash Jr., Bernhard Riemann, and Hypatia.

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Contemporaries

Among people born in 1170, Fibonacci ranks 1. After him are Saint Dominic, Valdemar II of Denmark, Wolfram von Eschenbach, Walther von der Vogelweide, Isabella of Hainault, Constantine Laskaris, Hermann von Salza, Al-Afdal ibn Salah ad-Din, Muqali, Otto I, Count of Burgundy, and Jayadeva. Among people deceased in 1240, Fibonacci ranks 1. After him are Ibn Arabi, Razia Sultana, Llywelyn the Great, Constance of Hungary, Raymond Nonnatus, Konrad von Thüringen, Jacques de Vitry, Caesarius of Heisterbach, Chormaqan, Hartmann, Count of Württemberg, and Skule Bårdsson.

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In Italy

Among people born in Italy, Fibonacci ranks 15 out of 5,161. Before him are Augustus (-63), Antonio Vivaldi (1678), Raphael (1483), Niccolò Machiavelli (1469), Pope John Paul I (1912), and Commodus (161). After him are Giuseppe Verdi (1813), Thomas Aquinas (1225), Giordano Bruno (1548), Pope Leo XIII (1810), Benito Mussolini (1883), and Cicero (-106).

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Among MATHEMATICIANS In Italy

Among mathematicians born in Italy, Fibonacci ranks 2. Before him are Archimedes (-287). After him are Joseph-Louis Lagrange (1736), Gerolamo Cardano (1501), Luca Pacioli (1445), Maria Gaetana Agnesi (1718), Niccolò Fontana Tartaglia (1499), Archytas (-428), Philolaus (-470), Giuseppe Peano (1858), Bonaventura Cavalieri (1598), and Lodovico Ferrari (1522).

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