---
tag: 2JK7BZ76P6
kind: concept
name: Ineffable cardinal
aliases: [almost-ineffable-cardinal, totally-ineffable-cardinal]
sources:
  - wikipedia: en:270005@r1366862934
    locator: Ineffable cardinal
    note: adopted
    mention: wikipedia://en/270005
    sections: [Summary]
same_as:
  wikidata: Q6028353
  wikipedia: Ineffable cardinal
inventory: [77QMCA6K6V]
---

## Summary

In the mathematics of transfinite numbers, an **ineffable cardinal** is a certain kind of large cardinal number, introduced by (Jensen Kunen 1969). In the following definitions, $\kappa$ will always be a regular [[uncountable|0W7FBYS1F1]] [[cardinal number|0EBACQFAZW]].