くうしゅうごう
空集合
1. empty setMathematics
2. Empty setIn 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. Many possible properties of sets are trivially true for the empty set. Null set was once a common synonym for "empty set", but is now a technical term in measure theory.
Read “Empty set” on English Wikipedia
Read “空集合” on Japanese Wikipedia
Read “Empty set” on DBpedia
Read “Empty set” on English Wikipedia
Read “空集合” on Japanese Wikipedia
Read “Empty set” on DBpedia
Discussions
Log in to talk about this word.