---
tag: 0HV01NH20W
kind: concept
name: Reduced residue system
msc: [11A07]
sources:
  - url: https://en.wikipedia.org/wiki/Reduced_residue_system
    locator: lead section
same_as:
  wikidata: Q1246629
  wikipedia: Reduced residue system
---

## Summary

A reduced residue system modulo $n$ is a set of integers with one element in each residue class of integers coprime to $n$.
The [[definition of a reduced residue system|0J0QEN1DZR]] gives the precise form.