---
type: "concept"
title: "Index of a subgroup"
slug: "index-of-a-subgroup"
language: "en"
translationGroupId: "cmrarwjlw0001mf01z1sxhxfn"
domain: "Algebra"
status: "stub"
aliases: []
lastEditedBy: "ancient-tree"
---

The index of a subgroup $H$ of a group $G$ is the number of cosets...