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en.wikipedia.org/wiki/Natural_number

Two important generalizations of natural numbers arise from the two uses of counting and ordering: cardinal numbers and ordinal numbers. A natural number can be used to express the size of a finite set; more precisely, a cardinal number is a measure for the size of a set, which is even suitable for infinite sets.

mathworld.wolfram.com/NaturalNumber.html

In fact, Ribenboim (1996) states "Let be a set of natural numbers; whenever convenient, it may be assumed that ." The set of natural numbers (whichever definition is adopted) is denoted N. Due to lack of standard terminology, the following terms and notations are recommended in preference to "counting number," "natural number," and "whole number."

www.quora.com/What-is-the-symbol-for-the-number-of-natural...

Are you asking the symbol for the set of rational numbers? There are an infinite number of rational numbers, so there is no number of them. The natural number set is normally represented by N, with an arbitrary element of the natural numbers being n.

math.stackexchange.com/questions/151037/what-is-the-symbol...

To summarize what has been said in the comments, there are no "official" symbols. Use whichever notation you feel most comfortable with, as long as it makes sense and can be easily understood by the general audience.

www.rationalskepticism.org/...i-write-these-math-symbols-in-word...

I hope this is the right place to post this question. I want to write in Word the hollow symbols of sets of numbers: Natural numbers (hollow N) · Integers (hollow Z) · Rational numbers (hollow Q) · Real numbers (hollow R) · Complex numbers (hollow C)

en.wikipedia.org/wiki/Number

The mathematical symbol for the set of all natural numbers is N, also written , and sometimes or when it is necessary to indicate whether the set should start with 0 or 1, respectively. In the base 10 numeral system, in almost universal use today for mathematical operations, the ...

vlorbik.wordpress.com/2008/07/16/11-the-set-of-natural-numbers

The symbol “ ” is just an abbreviation to allow us to refer to this object concisely. The elements of a set are the “things” in the collection. The symbol “ ” is pronounced “is an element of”, so for example is an abbreviation for the sentence “Thirty-seven is an element of the set of natural numbers.”. The ellipses ( …

tex.stackexchange.com/.../165032/symbol-for-set-of-integer

Symbol for Set of Integer [closed] Ask Question 8. I can use \mathbb{Z} to represent an integer type but what symbol I should denote a set of integer? symbols. share | improve this question. edited Mar 12 '14 at 2:37. ... in maths \mathbb Ndenotes the set of natural numbers. You also can use \mathbf N, but then, ...

mathworld.wolfram.com/N.html

The set of natural numbers (the positive integers Z-+ 1, 2, 3, ...; OEIS A000027), denoted N, also called the whole numbers. Like whole numbers, there is no general agreement on whether 0 should be included in the list of natural numbers. Due to lack of standard terminology, the following terms are recommended in preference to "counting number," "natural number," and "whol...

latex.wikia.org/wiki/List_of_LaTeX_symbols

LaTeX symbols have either names (denoted by backslash) or special characters. They are organized into seven classes based on their role in a mathematical expression. This is not a comprehensive list. Refer to the external references at the end of this article for more information. Letters are...