<mathematics, medieval logic, Fibonacci series>, <philosophy of science, Arabian philosophy, Arabian science> Leonardo Pisano (1170-1250) Italian mathematician. After travelling in North Africa, Fibonacci wrote Liber Abaci (1202), introducing the use of Arabic numerals for the decimal system into European arithmetic. His Liber quadratorum (Book of Square Numbers) (1225) introduced the "Fibonacci series" of natural numbers: 0, 1, 1, 2, 3 ,5 ,8, 13, . . . ., each element of which is the sum of the preceding two. Recommended Reading: Morris Kline, Mathematical Thought from Ancient to Modern Times (Oxford, 1990) and Paul Chika Emekwulu, Fibonacci Numbers For Research Mathematicians & AI Applications (Novelty, 2000).

[A Dictionary of Philosophical Terms and Names]


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