# cardinal number

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Related to Counting numbers: Natural numbers, Whole numbers

## cardinal number

, numeral
1. a number denoting quantity but not order in a set
2. Maths Logic
a. a measure of the size of a set that does not take account of the order of its members
b. a particular number having this function

## cardinal number

[′kärd·nəl ′nəm·bər]
(mathematics)
The number of members of a set; usually taken as a particular well-ordered set representative of the class of all sets which are in one-to-one correspondence with one another.

## cardinal number

The cardinality of some set.

## cardinal number

The number that states how much or how many. In "record 43 has 7 fields," the 7 is cardinal. See cardinality. Contrast with ordinal number.
References in periodicals archive ?
Of course, the counting numbers can be paired with even "smaller" infinite sets such as the prime numbers.
First, the familiar, but conceptually daunting collection of all the positive whole numbers (the counting numbers, 1, 2, 3 .
A PARADISE OF INFINITIES At first glance, it might seem obvious that the real numbers form a bigger infinity than the counting numbers do.
While the luxury trend and the bargain-hunting trend seem to coexist, at press time, retailers were still counting numbers, but doubtful that last-minute shopping would make up for sluggish sales in the previous weeks.
While this emergence has opened up an entirely new battleground for advertising dollars, advertisers must demand a solution that delivers a guarantee of quality, relevant context and targeting above and beyond simply counting numbers of views in order for their campaigns to be effective.
The 53-year old music mogul recently answered some questions for fans via Skype and spouted this unusual information about himself, saying that everything with him is about numbers and he is always counting numbers in my head.
For a free event it's an aggravated figure, you're counting numbers over a line, but someone could drift in and out 10 times.
If the odd counting numbers are labelled O(n) and the even counting numbers are labelled E(n), it follows that C(n) = O(n) [union] E(n).
Corporal Duncan's dad Andy said: "What gets me is that the pen-pusherin London are counting numbers while my son is out dodging bullets in Afghanistan.
One myth is that maths is all to do with counting numbers.
Independent adjudicators were at each school counting numbers taking part.
Thus it is plain that zero is the smallest of the counting numbers.

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