---
tag: 0C21Q694AG
kind: concept
name: Family of sets
aliases: [indexed-family-of-sets, collection-of-sets]
msc: ["03E20"]
sources:
  - url: https://en.wikipedia.org/wiki/Family_of_sets
    locator: lead section
same_as:
  wikidata: Q739925
  wikipedia: Family of sets
---

## Summary

A family of sets is a collection of sets, often indexed by the elements of an index set.