---
tag: 05WTQ6FFPS
kind: concept
name: Set difference
aliases: [relative-complement]
msc: ["03E20"]
sources:
  - url: https://en.wikipedia.org/wiki/Complement_(set_theory)
    locator: Relative complement
---

## Summary

The set difference of two sets is the set of the elements of the first set that are not elements of the second set.