empty set音标
英 [ˈempti set]
美 [ˈɛmpti sɛt]
empty set翻译
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用法
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)