不交集 Disjoint sets
（重定向自Mutually disjoint）
在数学里，两个集合被称为不交（disjoint），若其没有共同的元素。例如，{1, 2, 3}和{4, 5, 6}为不交集（disjoint sets）。
Mutually disjoint
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英语百科
Disjoint sets 不交集
（重定向自Mutually disjoint）
In mathematics, two sets are said to be disjoint if they have no element in common. Equivalently, disjoint sets are sets whose intersection is the empty set. For example, {1, 2, 3} and {4, 5, 6} are disjoint sets, while {1, 2, 3} and {3, 4, 5} are not.