---
tag: 0X8NMST0J2
kind: concept
name: Reflexive relation
aliases: [reflexivity]
msc: ["03E20"]
sources:
  - url: https://en.wikipedia.org/wiki/Reflexive_relation
    locator: lead section
same_as:
  wikidata: Q621850
  wikipedia: Reflexive relation
---

## Summary

A relation on a set is reflexive when each element is related to itself.