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单词 empty set
释义

empty set

听听怎么读
英 [?empti set]
美 [??mpti s?t]
是什么意思
  • n.

    空集；空系；

    • 英英释义

    Empty set

    • In mathematics, and more specifically set theory, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories assure that the empty set exists by including an axiom of empty set; in other theories, its existence can be deduced.

    以上来源于:Wikipedia

    学习怎么用

    权威例句

    Union- Closed Sets Conjecture
    intersection, and the whole set S. Properties. (description)
    Symplectic Filling
    axiom of infinity
    empty function (changes)
    Story forming, then, yes, I begin to map it out
    initial object
    HeytAlg (changes)
    Heyting algebra
    Lat (changes)
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