Overview

cardinal number


Show Summary Details

Quick Reference

A number that gives the number of elements in a set. If two sets can be put in one-to-one correspondence with one another they have the same cardinal number or cardinality. For finite sets the cardinal numbers are 0, 1, 2, 3,…, but infinite sets require new symbols to describe their cardinality. See aleph and aleph-null.

Subjects: Mathematics.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.