Fibonacci, Leonardo
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Fibonacci, Leonardo
Italian mathematician. He published Liber abaci/The Book of the Calculator in Pisa in 1202, which was instrumental in the introduction of Arabic notation into Europe. From 1960, interest increased in Fibonacci numbers, in their simplest form a sequence in which each number is the sum of its two predecessors (1, 1, 2, 3, 5, 8, 13, ...). They have unusual characteristics with possible applications in botany, psychology, and astronomy (for example, a more exact correspondence than is given by Bode's law to the distances between the planets and the Sun).
In 1220, Fibonacci published Practica geometriae, in which he used algebraic methods to solve many arithmetical and geometrical problems.
© RM 2009. Helicon Publishing is division of RM.
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