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 ...

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.

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 ...