HN's go-to recommendation for learning linear algebra intuition, repeatedly credited with making concepts click and complementing textbooks.
Topics › Mathematics & Theoretical CS
The best recreational & visual math videos, according to Hacker News
141 videos about recreational & visual math that Hacker News commenters keep pointing each other to, ranked by how many separate months they were recommended. Part of Mathematics & Theoretical CS.
HN's default recommendation for understanding the Fourier transform intuitively; many say it was the explanation that made it click.
HN treats it as the standard first stop for learning neural networks, praised for making the math intuitive.
HN repeatedly calls it one of the best math and graphics explainers on YouTube, praised for bridging game dev and math.
It is the go-to recommendation for anyone who wants to genuinely understand Bezier curves and splines, and commenters repeatedly call it one of the best programming-related educational videos.
HN recommends it as the best readily available interview with Simons, notable for his emphasis on luck and a humble approach to success.
The go-to recommended video for newcomers wanting a clear, visual explanation of how Bitcoin and blockchains work.
Recommended whenever APL or array languages come up as the quickest way to see why the paradigm is so striking.
A staple recommendation for anyone learning math, praised for visual intuition that makes memorized formulas make sense.
HN commenters love Cliff Stoll's earnest, playful personality and point to this as a delightful look at his unusual warehouse.
HN repeatedly recommends the series as the best intuition-first, visual introduction to linear algebra and a benchmark for clear math explanation.
HN calls it the best video on geometric algebra, one that makes the subject click in about 40 minutes.
HN fans list it among their favorite 3Blue1Brown videos for showing how mathematical problem solving actually unfolds.
HN commenters rate the series as some of the best visual teaching on complex numbers and recommend it for building intuition.
HN repeatedly points people to it as the clearest visual intuition for determinants, often saying it finally made the concept click.
HN commenters recommend it as a clear, accessible introduction to incompleteness and the self-referential proof idea.
It is the standard pointer for a clear, visual explanation of what fractals are, and for correcting the idea that fractal means self-similar.
Recommended as an accurate, entertaining on-ramp to set theory and infinity, worth pausing and rewatching.
HN recommends it as the go-to intuitive visualization of high-dimensional geometry, relevant to machine learning, optimization and sphere packing.
HN repeatedly names it the best, most intuitive explanation of eigenvalues, and a gateway to the whole linear algebra series.
The canonical visual for nested simulation, Turing completeness and self-reference; HN readers call it mind-blowing and reach for it constantly.
HN recommends it as an accessible explanation of number categories and why almost all numbers are unknowable.
HN commenters recommend it for hearing Graham himself and for its clear introduction to up-arrow notation and enormous numbers.
HN recommends it as the clearest visual explanation that uncertainty is intrinsic to waves, separate from measurement disturbance.
HN commenters recommend it as the best visual explanation of quaternions and a good way to visualize higher dimensions.
HN recommends it as an entertaining tour of how we define and categorize things, and it is cited when concept boundaries come up.
HN treats it as the best entry point to geometric algebra and an intuitive route to understanding quaternions.
Recommended as a careful, honest treatment of the -1/12 claim, often preferred over flashier videos.
HN fans love it for Knuth's humor and for how he makes open math problems feel approachable, and it is often cited for details like dancing links and counting rectangle subdivisions.
Recommended as a favorite Grant Sanderson video and a visual introduction to p-adic numbers and sums like 1+2+4+...
HN repeatedly recommends it as the best short, funny introduction to P vs. NP and complexity classes for people with no background.
HN pointed to it during 2020 as a digestible, well-made illustration of epidemic dynamics and interventions.
HN praises its visualizations, its handling of the -1/12 result, and its ending, and often prefers it to other explanations of the topic.
Fans name it as a favorite 3Blue1Brown video, praising its detective-story treatment of the inscribed square and rectangle problem.
Frequently recommended as the clearest explanation of prime spirals and the Ulam spiral.
HN recommends it as the most accessible introduction to what lies beyond infinity.
HN commenters call it a favourite Veritasium video, praised for how a simple equation reveals surprisingly complex patterns.
HN commenters point to it in election-security threads as an accessible explainer of how a vote can be verifiable but not sellable.
Recommended to people asking how to self-learn math as a quick bird's-eye overview of the field.
HN points to it as a funny, convincing take on number bases whenever dozenal or base 6 comes up.
Recommended as the visual explanation that makes Fourier series and transforms click, even for laypeople.
HN points to it in notation debates as a clean visual demonstration that exponents, logs and roots are three views of one relationship.
HN calls it illuminating for explaining why phi is the most irrational number, relevant to hashing, spirals and phyllotaxis.
Repeatedly recommended as the most accessible explanation of Bell's inequality, reducing it to a simple counting problem.
Go-to explanation whenever the strange 29.97 frame rate comes up, praised for its clarity and presenter.
Recommended as the best visual introduction to Hilbert curves, which come up in indexing, image layout and dimensionality mapping.
Strongly recommended as a mind-bending, approachable explanation of aperiodic patterns, even enjoyable with kids.
HN recommends it as one of the most accessible yet accurate introductions to quantum computing, and part of a wider series that covers Shor's algorithm.
HN points to it whenever Game of Life or cellular automata come up, as the best visual example of a mesmerizing continuous-domain alternative.
HN recommends it as an invaluable, intuitive explanation of Hamming codes that pairs well with hardware-oriented treatments.
HN recommends it as a well-visualized, story-driven history of complex numbers, suitable for beginners; some quibble with its framing of algebra and geometry.
HN people recommend it as a clear introduction to different sizes of infinity that non-mathematicians can follow.
HN's go-to link whenever Bayesian reasoning, base rates or imperfect tests come up.
HN commenters point to it as a quick, visual way to understand Euler's identity.
Recommended as an enjoyable, accessible talk for building intuition about higher dimensions.
HN recommends it as the simplest, most approachable introduction to quaternions, useful for people working in games and robotics.
Praised as a beautiful, understandable proof and a favorite among 3Blue1Brown videos.
HN points to it as a short, clear explanation of why Enigma was breakable and how search-space elimination works.
Recommended as the mind-melting intro to unimaginably large numbers.
HN points to it as the in-depth rebuttal to the Numberphile video that explains why the 'proof' is wrong yet the result is meaningful.
Linked as an entertaining introduction to Zipf's law and power-law distributions.
HN recommends it as a typical example of Tom7's technically astounding and playful videos.
HN recommends it as the clearest explanation of the patterns behind modular multiplication diagrams and times table art.
Recommended as an accessible demonstration that people are bad at producing or judging random sequences.
HN commenters call it the best explanation of how holograms work, and one says it transformed their understanding.
HN recommends it as an entertaining way to learn math through juggling.
Commenters recommend it for the mind-blowing connection between rhythm and pitch and as an approachable intro to music theory.
HN uses it as the go-to illustration of just how large 2^256 is.
HN recommends it as the clearest intuitive introduction to thinking about a fourth dimension.
HN recommends it as an accessible, well-visualized entry point to Hackenbush, surreal numbers and their link to Nim.
HN commenters recommend it to see how a top mathematician approaches an unfamiliar problem through experiments and curiosity.
Recommended whenever the Mandelbrot set comes up, as a neat and surprising result.
Recommended as a mind-opening, visual explanation of why Euler's formula is true.
Recommended as a rare detailed look at how 3b1b videos are made, including live debugging of his rendering engine.
Commenters link it as a quick, clear explanation of why twelve notes only approximate simple ratios.
HN points to it whenever discussion turns to billionaire wealth or the human difficulty of grasping very large numbers.
HN points to it as a good, anecdote-filled introduction to the math of shuffling from the expert himself.
Recommended as a clear, visual explanation of continued fractions and why phi is hardest to approximate by fractions.
HN recommends it in map projection and coastline threads as a fun look at how measurement choices change area figures.
HN uses it as a vivid demonstration that Fourier series and epicycles can fit anything, and as a warning about models with too much wiggle room.
HN recommends it as an excellent explanation of how we know cosmic distances.
Pointed to as a fun, light introduction to topology and to answer the human-holes question.
HN recommends it as an accessible, gentle introduction that makes category theory feel approachable and shows its analogy-making power.
Loved for its zoom-out tour of physical scales and recommended alongside other paper-size and scale-of-the-universe discussions.
HN recommends it as an accessible layperson's introduction to the Reynolds number and fluid dynamics scales.
Recommended among the nice visual explorations and tech demos of non-Euclidean geometry for games.
HN people recommend it as the most intuitive introduction to Bayes' theorem and cite it in base-rate arguments.
HN cites it in LLM randomness and number-picking threads as evidence that humans are also biased and predictable when asked for random numbers.
Recommended as a short, charming introduction to surreal numbers and to how Knuth wrote his book in under a week.
Recommended in large-number threads as going further than other popular videos on Graham's number and ordinals.
HN uses it as the standard reference for the -1/12 meme, with commenters split between enjoying it and calling it a cheat.
Recommended as an accessible explanation of how Rubik's cube solving relates to group theory.
Used as a funny, accessible reference for coincidences, spurious patterns and maths errors.
Cited for its well-known attempt to convey the size of 52 factorial.
HN cites it as a fun, tangible way to teach machine learning, including to kids.
HN recommends it as a funny piece on Excel used in ways it shouldn't be.
HN recommends it as a concise, quick explanation of the OEIS pattern when threads touch the integer sequence encyclopedia.
HN commenters cite it as a clear debunking of election-fraud statistics and as a warning against comparing percentages without context.
HN commenters link it in voting-reform discussions as a concise explanation of range voting versus other systems.
Commenters cite it as a visual debunking of Benford-based election fraud claims and as a guide to when Benford's Law does and does not apply.
Recommended whenever the counterintuitive geometry of high-dimensional spheres comes up, including in vector embedding discussions.
Used to illustrate that humans pattern-match and find spurious patterns in enough data points.
Recommended as an accessible, visual way to understand backpropagation and neural networks.
Recommended in hexagon-grid threads as a fun but informative overview, and sometimes dropped as a light joke.
HN cites it as an excellent example of solving small cases to find a pattern, and as a favorite puzzle with an elegant binary solution.
HN recommends it as the go-to explanation of optimal Wordle openers like CRANE and a friendly introduction to information theory, also relevant to Mastermind.
It is the go-to visual explanation of delay-line memory and early electronic calculators whenever the topic comes up.
HN points to it whenever highly divisible numbers matter, such as sharding, base 12, time units and music.
HN likes it for Cliff Stoll's infectious passion for topology, and it gets linked in threads about him and about Mobius strips.
During the early COVID-19 period, HN commenters linked it as the clearest quick explanation of what exponential growth means for an epidemic.
Recommended as an approachable way to understand the quantum nature of light and basic quantum math without heavy machinery.
HN mentions it as a related, well-made Veritasium video when infinity and Hilbert's hotel come up.
HN recommends it as the explanation that makes complex exponentials click, especially for understanding the Fourier transform.
Cited as the origin of the prime-number portrait trend and as an example of drawings made with primes.
Mentioned as a favorite 3Blue1Brown video and a related watch in threads about deep mathematical structure.
HN uses it as a reference point for how deep Mandelbrot zooms can go and how much compute they once took.
Cited as an accessible explanation of why some simple shapes lack neat exact formulas.
Used as a friendly example of high-dimensional geometry showing up in a simple problem, and of ball volume shrinking inside a hypercube.
HN links it to explain why people repeatedly get large-number arithmetic wrong in discussions of money and mental math.
HN links it as a fun explanation of the purely mechanical Dr. Nim game in threads about early game computers and marble-based binary math.
Which of these have you already seen?
Connect YouTube and HackerTube AI hides what you've watched and ranks the rest for you.