empty set
英：[ˈempti set] 美： [ˈɛmpti sɛt]
empty set 基本解释
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
empty set 相关例句
权威例句
Union- Closed Sets Conjectureintersection, and the whole set S. Properties. (description)Symplectic Fillingaxiom of infinityempty function (changes)Story forming, then, yes, I begin to map it outinitial objectHeytAlg (changes)Heyting algebraLat (changes)
