---
tag: CWYQVFX00Q
kind: concept
name: Compact cardinal
sources:
  - wikipedia: en:43580500@r1360947732
    locator: Glossary of set theory, section C
    note: adopted
    mention: wikipedia://en/43580500#TVQS
    sections: [Summary]
inventory: [ND6J2H5R59]
---

## Summary

A cardinal number that is uncountable and has the property that any collection of sets of that cardinality has a subcollection of the same cardinality with a non-empty intersection.