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cardinal number

1 ENTRIES FOUND:
cardinal number noun
plural cardinal numbers
cardinal number
noun
plural cardinal numbers
Learner's definition of CARDINAL NUMBER
[count]
: a number (such as 1, 2, or 3) that is used in simple counting and shows quantity基数;纯数 compare ordinal number

cardinal number

noun

1
: a number (such as 1, 5, 15) that is used in simple counting and that indicates how many elements there are in an assemblage see Table of Numbers
2
: the property that a mathematical set has in common with all sets that can be put in one-to-one correspondence with it

Example Sentences

Recent Examples on the Web The result means both axioms are more likely to be true, which in turn suggests that the number of real numbers is bigger than initially thought, corresponding to the cardinal number rather than the smaller (yet still infinite) . Quanta Magazine, 23 Dec. 2021 The cardinal number 𝔡 is defined as the smallest possible size of a set of continuous functions sufficient to dominate every possible continuous function. Martin Goldstern, Scientific American, 16 Aug. 2021 With the hypothesis unresolved, many other properties of cardinal numbers and infinity remain uncertain too. Quanta Magazine, 26 Nov. 2013

Word History

First Known Use

1801, in the meaning defined at sense 1

Time Traveler
The first known use of cardinal number was in 1801

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