"Natural Numbers" can mean either "Counting Numbers" (1, 2, 3, etc), or "Whole Numbers" (0, 1, 2, 3, etc), there is disagreement on the definition. ... www.mathsisfun.com
Some authors who exclude zero from the naturals use the terms natural numbers with zero, whole numbers, or counting numbers, denoted W, for the set of ... en.wikipedia.org
The term whole number does not have a consistent definition. ... See natural number for some information about the evolution of the term. ... en.wikipedia.org
Anyway, we now have the natural numbers. WHOLE NUMBERS If you add zero to your list then you have the whole numbers, Whole numbers 0,1,2,3,. ... mathforum.org
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