---
tag: YFJ90AH6N8
kind: concept
name: Kelley
sources:
  - wikipedia: en:43580500@r1360947732
    locator: Glossary of set theory, section K
    note: adopted
    mention: wikipedia://en/43580500#BHTJ
    sections: [Summary]
inventory: [7JZVAQ7Y71]
---

## Summary

John L. Kelley

Morse–Kelley set theory (also called Kelley–Morse set theory), a set theory with classes