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Grant Sanderson

@3blue1brown.com
20K followers 18 following 53 posts

Math videos

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Grant Sanderson @3blue1brown.com · 18/09/2026
The last IMO problem AI could not solve. For when you want to sit down for a longer problem-solving saga, here's the full video: youtu.be/Nbwv5wHQoj0
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Grant Sanderson @3blue1brown.com · 12/06/2026
Here's an excerpt from the most recent video on how Shannon studied the entropy of English, animated by Mitchell Zemil
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Grant Sanderson @3blue1brown.com · 10/06/2026
Suppose you wanted to reinvent the idea of Shannon Entropy for yourself. This puzzle is a good place to start (Full video on YouTube).
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Grant Sanderson @3blue1brown.com · 22/03/2026
This video was a complete joy to make. Here's a short preview, but next time you're looking to sit down for 45 minutes of math and art, take a look at the full version on YouTube: youtu.be/ldxFjLJ3rVY
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Grant Sanderson @3blue1brown.com · 27/02/2026
Well, math terminology being what it is, something like this was bound to happen eventually. (If you're curious about why these balls are so puny, the full talk is up on YouTube)
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Grant Sanderson @3blue1brown.com · 20/01/2026
The Ladybug Clock puzzle
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Grant Sanderson @3blue1brown.com · 05/11/2025
The next video in the Laplace Transform sequence is up! youtu.be/FE-hM1kRK4Y Here, we dig into a concrete example, the forced oscillator. Some of you may remember that this was relevant for studying why light slows down in a medium.
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Grant Sanderson @3blue1brown.com · 07/09/2025
New video about a piece by the modern artist Sol LeWitt, and the group theory behind it. youtu.be/_BrFKp-U8GI
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Grant Sanderson @3blue1brown.com · 26/02/2025
Many years ago I made this video about how two colliding blocks on a frictionless plane can compute pi. My challenge to you is simple: Implement this in practice.
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Grant Sanderson @3blue1brown.com · 06/02/2025
I've had fun editing together on a very different kind of video from the norm. Keep an eye out this weekend.
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Grant Sanderson @3blue1brown.com · 24/01/2025
Holograms! Easily my favorite project from last year. Full video: youtu.be/EmKQsSDlaa4
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Grant Sanderson @3blue1brown.com · 24/12/2024
New* video! If you’ve ever wondered what topology is, this problem is one of the best examples I know of to give an authentic sense of what it’s all about: youtu.be/IQqtsm-bBRU
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