Leonardo of Pisa, also known as Fibonacci, is best remembered today for introducing a sequence of numbers: 0, 1, 1, 2, 3, 5 and so on, each number after 0 and 1 equaling the sum of the two before it.

A linear (or arithmetic) sequence increases or decreases by the same number each time, whereas non-linear sequences have different patterns between the numbers. A geometric sequence has a term-to ...

By the latter part of the first millennium of the Current Era, the system we use today to write numbers and do arithmetic had been worked out — expressing any number using just the ten numerals ...