Integers

An integer by definition is an undivided or whole number. The set of integers consists of the positive whole numbers, zero and the negative whole numbers. Natural numbers are the positive whole numbers and are also included as a subset to the set of integers. The set of integer numbers are included within the set of real numbers that also include the set of rational numbers and the set of irrational numbers. Between any two whole integers there is an infinite number of rational and irrational numbers. Within the set of integers the arithmetic functions of addition, multiplication and subtraction will lead to another integer.

The integers with an absolute value less than six are 5, 4, 3, 2, 1, 0, -1, -2, -3, -4, -5.