Definition: | element of the unlimited sequence {0, 1, 2, 3,...} NOTE 1 The operations of addition and multiplication are defined for any two natural numbers. NOTE 2 There is a total order on the set of natural numbers. NOTE 3 The set of natural numbers is denoted by ℕ (N with oblique bar doubled), or N, or sometimes N with left vertical bar doubled. This set without zero is denoted by an asterisk to the symbol, for example ℕ*.
|