Infinite Series

Latest Episode

The Assassin Puzzle - Imagine you have a square-shaped room, and inside there is an assassin and a target. And suppose that any shot that the assassin takes can ricochet off the walls of the room, just like a ball on a billiard table. Is it possible to position a finite number of security guards inside the square so that they block every possible shot from the assassin to the target?

All Episodes

The Assassin Puzzle

Can you save the target from his assassin in a square room with bouncy walls?

Watch Now
Instant Insanity Puzzle

Can you stack four colored cubes so that each color only shows once on each side?

Watch Now
Defining Infinity

Set theory is the foundation of all of mathematics. How does it handle infinity?

Watch Now
Unraveling DNA with Rational Tangles

When you think about math, what do you think of knots? Probably... knot.

Watch Now
How Big are All Infinities Combined? (Cantor's Paradox)

Infinities come in different sizes. So what's the right way to describe the sum?

Watch Now
The Geometry of SET

In SET, what is the maximum number of cards you can deal that might not contain a SET?

Watch Now
What was Fermat’s “Marvelous" Proof?

If Fermat had a little more room in his margin, what proof would he have written there?

Watch Now
What are Numbers Made of?

In the physical world, objects are made of simpler parts. What are numbers made of?

Watch Now
What Does It Mean to Be a Number? (The Peano Axioms)

Could you explain numbers to someone without using the notion of a number?

Watch Now
Telling Time on a Torus

What shape do you most associate with a standard analog clock? Circle or... torus?

Watch Now
How to Divide by "Zero"

What happens when you divide things that aren’t numbers?

Watch Now
Beyond the Golden Ratio

You know the Golden Ratio, but what is the Silver Ratio?

Watch Now
Proving Brouwer's Fixed Point Theorem

The proof for Brouwer's Fixed Point Theorem uses a bridge between geometry and algebra.

Watch Now
The Mathematics of Diffie-Hellman Key Exchange

How can two people share the same key without someone else getting a hold of it?

Watch Now
Topology vs "a" Topology

What exactly is a topological space?

Watch Now
This Video was Not Encrypted with RSA

Here we break down Asymmetric crypto and more.

Watch Now
Associahedra: The Shapes of Multiplication

What happens when you multiply shapes?

Watch Now
The Multiplication Multiverse

What happens if you multiply things that aren’t numbers?

Watch Now

About Infinite Series

Mathematician Kelsey Houston-Edwards offers ambitious content for viewers that are eager to attain a greater understanding of the world around them. Math is pervasive - a robust yet precise language - and with each episode you’ll begin to see the math that underpins everything in this puzzling, yet fascinating, universe.