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cardinal number meaning

EN
WCardinal number
  • In mathematics, cardinal numbers, or cardinals for short, are a generalization of the natural numbers used to measure the cardinality (size) of sets. The cardinality of a finite set is a natural number: the number of elements in the set.
  • Cardinality is defined in terms of bijective functions. Two sets have the same cardinality if, and only if, there is a one-to-one correspondence (bijection) between the elements of the two sets.
  • There is a transfinite sequence of cardinal numbers:
  • This sequence starts with the natural numbers including zero (finite cardinals), which are followed by the aleph numbers (infinite cardinals of well-ordered sets). The aleph numbers are indexed by ordinal numbers.
cardinal number
cardinal number
  • Part-of-Speech Hierarchy
    1. Nouns
      • Countable nouns
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    1. en cardinal numbers
    Source: Wiktionary
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    Meaning of cardinal number for the defined word.

    Grammatically, this idiom "cardinal number" is a noun, more specifically, a countable noun.
    Definiteness: Level 8
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