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Counting Number


A positive integer: 1, 2, 3, 4, ... (OEIS A000027), also called a natural number. However, zero (0) is sometimes also included in the list of counting numbers. Due to lack of standard terminology, the following terms are recommended in preference to "counting number," "natural number," and "whole number."

setnamesymbol
..., -2, -1, 0, 1, 2, ...integersZ
1, 2, 3, 4, ...positive integersZ-+
0, 1, 2, 3, 4, ...nonnegative integersZ-*
0, -1, -2, -3, -4, ...nonpositive integers
-1, -2, -3, -4, ...negative integersZ--

See also

Natural Number, Whole Number, Z, Z--, Z-+, Z-*

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References

Sloane, N. J. A. Sequence A000027/M0472 in "The On-Line Encyclopedia of Integer Sequences."

Referenced on Wolfram|Alpha

Counting Number

Cite this as:

Weisstein, Eric W. "Counting Number." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CountingNumber.html

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