Science and Nature

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.

This Video was Not Encrypted with RSA

8m 2s

Here we break down Asymmetric crypto and more.


  • The Assassin Puzzle: asset-mezzanine-16x9

    The Assassin Puzzle

    S2 E19 - 9m 12s

    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?

  • Instant Insanity Puzzle: asset-mezzanine-16x9

    Instant Insanity Puzzle

    S2 E18 - 9m 32s

    Imagine you have four cubes, whose faces are colored red, blue, yellow, and green. Can you stack these cubes so that each color appears exactly once on each of the four sides of the stack?

  • Defining Infinity: asset-mezzanine-16x9

    Defining Infinity

    S2 E17 - 10m 31s

    Set theory is supposed to be a foundation of all of mathematics. How does it handle infinity?

  • Unraveling DNA with Rational Tangles: asset-mezzanine-16x9

    Unraveling DNA with Rational Tangles

    S2 E16 - 9m 36s

    When you think about math, what do you think of? Numbers? Equations? Patterns maybe? How about… knots? As in, actual tangles and knots?

  • The Geometry of SET: asset-mezzanine-16x9

    The Geometry of SET

    S2 E14 - 10m 21s

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

  • What are Numbers Made of?: asset-mezzanine-16x9

    What are Numbers Made of?

    S2 E12 - 10m 7s

    In the physical world, many seemingly basic things turn out to be built from even more basic things. Molecules are made of atoms, atoms are made of protons, neutrons, and electrons. So what are numbers made of?

  • Telling Time on a Torus: asset-mezzanine-16x9

    Telling Time on a Torus

    S2 E10 - 7m 17s

    What shape do you most associate with a standard analog clock? Your reflex answer might be a circle, but a more natural answer is actually a torus. Surprised? Then stick around.

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