Source: wikibot/family-of-sets
= Family of sets
{wiki=Family_of_sets}
In set theory, a **family of sets** (or a **collection of sets**) is a set that contains other sets as its elements. More formally, it can be defined as a set \\( \\mathcal\{F\} \\) where each element \\( A \\) of \\( \\mathcal\{F\} \\) is itself a set. Families of sets can be indexed in various ways.