# Exploring the concept of infinities and set theory in mathematics

TLDR This episode delves into the concept of infinities and set theory, starting with mathematician Georg Cantor's work. Sets, which can have an infinite number of members, are a useful tool in mathematics. The episode also discusses the idea that there are different sizes of infinities and the continuum hypothesis.

### Timestamped Summary

00:00
There are infinities that are bigger than other infinities.

02:01
The episode will discuss the concept of infinities and how there are some infinities larger than others, starting with the work of mathematician Georg Cantor and his creation of set theory.

03:57
Sets are a simple and handy way to think about mathematics, and they can have an infinite number of members, such as the set of natural numbers.

05:53
An infinite number of people can be accommodated in an infinite number of rooms by having everyone move to a room that is twice the number of the room they were previously in.

07:45
The set of all fractions is equal to the set of natural numbers, and the set of natural numbers is equal to the set of real numbers.

09:37
The set of real numbers is larger than the set of natural numbers, and there are an infinite number of infinities, each larger than the next.

11:43
The continuum hypothesis states that there are no infinite sets between certain sizes, but it has never been proven.