cardinality

American  

[kahr-dn-al-i-tee] / ˌkɑr dnˈæl ɪ ti /

noun

Mathematics.

PLURAL

cardinalities

1. (of a set) the cardinal number indicating the number of elements in the set.

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cardinality British  

/ ˌkɑːdɪˈnælɪtɪ /

noun

1. maths the property of possessing a cardinal number

2. maths logic (of a class) the cardinal number associated with the given class. Two classes have the same cardinality if they can be put in one-to-one correspondence

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Etymology

Origin of cardinality

First recorded in 1930–35; cardinal + -ity

Example Sentences

But if you can assign exactly one seat to each person, then both sets are exactly the same size and thus have the same cardinality.

From Scientific American

It seems that the property of thought that the article describes might better be called “generalized quantity,” “comparative quantity” or “generalized cardinality.”

From Scientific American

As Cantor was able to show, the cardinality of the natural numbers is the smallest possible infinity.

From Scientific American

Alternatively, it could be termed something else: cardinality, for example.

From Scientific American

He proved that two sets have the same size, or “cardinality,” when they can be put into one-to-one correspondence with each other—when there is exactly one driver for every car.

From Scientific American