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词汇 denumerable
释义

Definition of denumerable in English:

denumerable

adjective dɪˈnjuːm(ə)rəb(ə)ldēˈn(y)o͞omərəb(ə)l
Mathematics
  • Able to be counted by a one-to-one correspondence with the infinite set of integers.

    〔数〕可数的

    Example sentencesExamples
    • The non-denumerable infinity of real numbers (and thus of points in space and of events in time) is much larger than the merely denumerable infinity of integers.
    • The paper discusses denumerable sets, i.e. those which are in 1-1 correspondence with the natural numbers.

Derivatives

  • denumerability

  • noun dɪnjuːm(ə)rəˈbɪlɪti
    Mathematics
    • At least five mathematicians tried to prove denumerability of the value set, to which the names of two of them are attached.
      Example sentencesExamples
      • I don't know how to approach it… but know that it is based on the concept of denumerability of real numbers.
      • Combining with his proof of the denumerability of rational numbers, it proves the existence of irrational numbers without actually constructing any irrational number.
      • The list includes closure, well-ordering, well-foundedness, and various cardinalities, such as finitude and denumerability.
  • denumerably

  • adverb
    Mathematics
    • Imagine the hotel filled to capacity with denumerably many guests.
      Example sentencesExamples
      • This type of space requires a slightly different treatment to spaces of finite, or denumerably infinite, dimensions.
      • The most famous was his diagonal argument which seems to show that there must be orders of infinity, and specifically that the non-denumerably infinite is distinct from the denumerably infinite.
      • This amounts to saying the transfinite whole is not equal to the sum of its denumerably infinite parts.
      • This way of reasoning is also present in finite and denumerably infinite collections.

Origin

Early 20th century: from late Latin denumerare 'count out' + -able.

Definition of denumerable in US English:

denumerable

adjectivedēˈn(y)o͞omərəb(ə)l
Mathematics
  • Able to be counted by a one-to-one correspondence with the infinite set of integers.

    〔数〕可数的

    Example sentencesExamples
    • The paper discusses denumerable sets, i.e. those which are in 1-1 correspondence with the natural numbers.
    • The non-denumerable infinity of real numbers (and thus of points in space and of events in time) is much larger than the merely denumerable infinity of integers.

Origin

Early 20th century: from late Latin denumerare ‘count out’ + -able.

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