cardinal numbers

Cultural  

1. Numbers that indicate the quantity of things in a group or set, but not the order or arrangement of those things. One, two, and one thousand are cardinal numbers. (Compare ordinal numbers.)

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Example Sentences

For example, in addition to the cardinal numbers described here, many other infinite cardinalities lying between ℵ1 and the continuum have been discovered since the 1940s.

From Scientific American • Aug. 16, 2021

After we have these notions, the size of sets is denoted by cardinal numbers, or cardinals.

From Scientific American • Aug. 16, 2021

Rather our result proves that there are mathematical universes in which the 10 specific cardinal numbers between ℵ1 and 2ℵ0 turn out to be different.

From Scientific American • Aug. 16, 2021

In fact, the size of the set of real numbers can vary greatly: there could be eight, 27 or infinitely many cardinal numbers between ℵ1 and 2ℵ0—even uncountably many.

From Scientific American • Aug. 16, 2021

Chapters in books are usually given the cardinal numbers 1, 2, 3, 4, 5, 6 and so on.

From "The Curious Incident of the Dog in the Night-Time" by Mark Haddon