**qudt:CT_COUNTABLY-INFINITE**

Type

Description

A set of numbers is called countably infinite if there is a way to enumerate them. Formally this is done with a bijection function that associates each number in the set with exactly one of the positive integers. The set of all fractions is also countably infinite. In other words, any set $X$ that has the same cardinality as the set of the natural numbers, or $| X | \; = \; | \mathbb N | \; = \; \aleph0$, is said to be a countably infinite set.

Generated 2024-05-25T09:14:34.033-04:00 by lmdoc version 1.1 with TopBraid SPARQL Web Pages (SWP)