Cocountability
id:
cocountability-275-7188476
title:
Cocountability
text:
In mathematics, a cocountable subset of a set X is a subset Y whose complement in X is a countable set. In other words, Y contains all but countably many elements of X. Since the rational numbers are a countable subset of the reals, for example, the irrational numbers are a cocountable subset of the reals. If the complement is finite, then one says Y is cofinite.
brand slug:
wiki
category slug:
encyclopedia
description:
Having all but countably many elements
original url:
https://en.wikipedia.org/wiki/Cocountability
date created:
date modified:
2024-04-08T01:06:28Z
main entity:
{"identifier":"Q5139907","url":"https://www.wikidata.org/entity/Q5139907"}
image:
fields total:
13
integrity:
14