Fibonacci
Fibonacci (born around the year 1170, died around 1250),[1] full name Leonardo Pisano Bigollo,[1] was an Italian mathematician and among the most distinctive mathematicians in the Western world of the Middle Ages.
His nickname Fibonacci was taken from his father, whose name was Bonacci.[source?] Fibonacci means son of (a) Bonacci.[2] His mother was Alessandra Larracocci, who died when Fibonacci was 9 years old.[source?] He also had a sister named Danica.[source?] He is considered the "Father of Mathematics".[who?]
[change] Fibonacci number sequence
Fibbonacci is best known for the list of numbers called the Fibonacci Sequence. The list never stops, but it starts this way:
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ...
In this list, a person can find the next number by adding the last two numbers together.
1 + 1 = 2
1 + 2 = 3
2 + 3 = 5
3 + 5 = 8
5 + 8 = 13
8 + 13 = 21
13 + 21 = 34
21 + 34 = 55
34 + 55 = 89
55 + 89 = 144
89 + 144 = 233
144 + 233 = 377
233 + 377 = 610
377 + 610 = 987
610 + 987 = 1597
987 + 1597 = 2584
etc...
This series is also interesting because the ratio of two adjacent numbers in the series approaches the golden ratio, or Phi, as the numbers get bigger.
[change] References
- ↑ 1.0 1.1 ThinkQuest Library: Leonardo Fibonacci Biography
- ↑ "Who was Fibonacci?". http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fibBio.html. Retrieved 5 March 2011. "Fibonacci is a shortening of the Latin "filius Bonacci", used in the title of his book Libar Abaci (of which mmore later), which means "the son of Bonaccio". His father's name was Guglielmo Bonaccio. Fi'-Bonacci is like the English names of Robin-son and John-son. But (in Italian) Bonacci is also the plural of Bonaccio; therefore, two early writers on Fibonacci (Boncompagni and Milanesi) regard Bonacci as his family name (as in "the Smiths" for the family of John Smith)."
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