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Leonardo Pisano Fibonacci
Fibonacci or Leonard of Pisa, played an important role in reviving ancient
mathematics and made significant contributions of his own. Liber abaci introduced the
Hindu-Arabic place-valued decimal system and the use of Arabic numerals into
Europe.
Leonardo Pisano is better known by his nickname Fibonacci. He played an important role in
reviving ancient mathematics and made significant contributions of his own.
Fibonacci was born in Italy but was educated in North Africa where his father held a
diplomatic
post. He travelled widely with his father, recognising and the enormous advantages of the
mathematical systems used in these countries.
Liber abaci , published in 1202 after his return to Italy, is based on bits of arithmetic
and
algebra that Fibonacci had accumulated during his travels. Liber abaci introduced the
Hindu-Arabic place-valued decimal system and the use of Arabic numerals into Europe.
A problem in Liber abaci led to the introduction of the Fibonacci numbers and the
Fibonacci
sequence for which Fibonacci is best remembered today. The Fibonacci Quarterly is a modern
journal devoted to studying mathematics related to this sequence.
Fibonacci's other books of major importance are Practica geometriae in 1220 containing a
large
collection of geometry and trigonometry. Also in Liber quadratorum in 1225 he approximates
a
root of a cubic obtaining an answer which in decimal notation is correct to 9 places.
Mis practica geometriae in 1220 gave a compilation of the geometry of the time and also
introduced some trigonometry.
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