---
tag: P18RRFT78Y
kind: concept
name: One-to-one
sources:
  - wikipedia: en:76765067@r1368301704
    locator: Glossary of logic, section O
    note: adopted
    mention: wikipedia://en/76765067#S6FB
    sections: [Summary]
inventory: [ENXFCX4KP8]
---

## Summary

A function or mapping from one set to another where each element of the first set is associated with a unique element of the second set; also known as injective.