Sizes of infinity fall into two broad classes: *countable* infinities, and *uncountable* infinities.

A set $~$S$~$ is *uncountable* if it is not countable.

https://arbital.com/p/uncountable

by Jason Gross Mar 26 2016 updated Oct 21 2016

Some infinities are bigger than others. Uncountable infinities are larger than countable infinities.

Sizes of infinity fall into two broad classes: *countable* infinities, and *uncountable* infinities.

A set $~$S$~$ is *uncountable* if it is not countable.