Leonardo Pisano, known by his nickname Fibonacci, was born in Pisa, Italy, but was educated in North Africa (Algeria) where his father, Guilielmo, held a diplomatic post.

Fibonacci introduced the decimal system and the use of Arabic numerals into Europe in his book, Liber abaci (1202).

Fibonacci numbers: 1, 1, 2, 3, 5, 8, 13, 21, 55, 89, 144, 233, 377, . . .

Fibonacci, while studying how many rabbits would be born from an original pair of rabbits, assumed that every month each pair would produce another pair and that rabbits would begin to breed when they are two months old. After the process got started, the total number of pairs of rabbits at the end of each month would be as follows: 1, 2, 3, 5, 8, 13, 21, 55, 89, 144, 233.

Each successive number is the sum of the two preceding numbers.

Divide any of the Fibonacci numbers by the next higher number [and] the sequence of ratios will converge to 0.618. Dividing a number by its previous number will converge to 1.618. The Greeks knew this proportion and called it the ‘Golden Mean’.

Aubergines Fibonacci

Belgian Minimal Art involving eggplants and Fibonacci numbers.