Counting Number
المؤلف:
Sloane, N. J. A
المصدر:
Sequence A000027/M0472 in "The On-Line Encyclopedia of Integer Sequences."
الجزء والصفحة:
...
27-12-2021
1553
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."
| set |
name |
symbol |
...,  ,  , 0, 1, 2, ... |
integers |
Z |
| 1, 2, 3, 4, ... |
positive integers |
Z-+ |
| 0, 1, 2, 3, 4, ... |
nonnegative integers |
Z-* |
0,  ,  ,  ,  , ... |
nonpositive integers |
|
 ,  ,  ,  , ... |
negative integers |
Z-- |
REFERENCES:
Sloane, N. J. A. Sequence A000027/M0472 in "The On-Line Encyclopedia of Integer Sequences."
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