---
type: "concept"
title: "Complement of a subset"
slug: "complement-of-a-subset"
language: "en"
translationGroupId: "cms32q6vp000nqe01lrz11gox"
domain: "Logic"
status: "stub"
aliases: []
lastEditedBy: "ancient-tree"
---

The complement of a [[Subset|subset]] $A$ of a set $X$, denoted as $X\backslash A$, is the set of elements of $X$ which are not in $A$.