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Recreational & visual math Videos Recommended on Hacker News (141)

Recreational & visual math is one of the 150 topics Hacker News readers organize their video recommendations around. These 141 videos each earned real recommendations in real HN threads between 2010 and 2026 — 552 recommendations in total — and they're ranked by how many separate months the community kept coming back to them, not by view count.

Math explainers and recreation: 3Blue1Brown, Numberphile, Mathologer, puzzles, fractals, surreal numbers, math history, mathematicians, beautiful proofs, math in everyday life.

Why HN keeps sending people here — on Vectors | Chapter 1, Essence of linear algebra: “the most welcoming and informative introduction to the topic I've ever seen” — an HN commenter, 2018.

Recreational & visual math Videos Recommended on Hacker News (141)

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Vectors | Chapter 1, Essence of linear algebra

But what is the Fourier Transform? A visual introduction.

But what is a neural network? | Deep learning chapter 1

The Beauty of Bézier Curves

The Continuity of Splines

Jim Simons (full length interview) - Numberphile

But how does bitcoin actually work?

Conway's Game Of Life in APL

The essence of calculus

The man with 1,000 Klein Bottles UNDER his house - Numberphile

Essence of linear algebra preview

A Swift Introduction to Geometric Algebra

The hardest problem on the hardest test

Imaginary Numbers Are Real [Part 1: Introduction]

The determinant | Chapter 6, Essence of linear algebra

Math's Fundamental Flaw

Fractals are typically not self-similar

The Banach–Tarski Paradox

Thinking outside the 10-dimensional box

Eigenvectors and eigenvalues | Chapter 14, Essence of linear algebra

Life in life

All the Numbers - Numberphile

How Big is Graham's Number? (feat Ron Graham)

The more general uncertainty principle, regarding Fourier transforms

Visualizing the 4d numbers Quaternions

Do Chairs Exist?

Why can't you multiply vectors?

Ramanujan: Making sense of 1+2+3+... = -1/12 and Co.

Stanford Lecture: Don Knuth—"A Conjecture That Had To Be True" (2017)

What does it feel like to invent math?

P vs. NP and the Computational Complexity Zoo

Simulating an epidemic

But what is the Riemann zeta function? Visualizing analytic continuation

Who cares about topology? (Old version)

Why do prime numbers make these spirals? | Dirichlet’s theorem and pi approximations

How To Count Past Infinity