A museum exhibit crossed with an interactive textbook. Each level pairs a handful of ideas with visualizations you can poke at — sieves you step through, races you referee, infinite sums you assemble by hand. Text supports the pictures, not the other way around.
Two promises. Honesty: nothing here is dumbed down into falsehood; when a step needs machinery beyond the page, we say so and show you the shape of it. Wonder: the Riemann Hypothesis sits at the bottom of a real mystery — why the primes, the most jagged objects in mathematics, obey a law of almost supernatural precision. By Level 4 you will see that law drawn on screen, built from the actual zeros of the actual zeta function.
No account, no installs. Your progress lives in your browser. Start anywhere; the ladder in the sidebar always shows where you stand.
Made by Adil Moujahid — more projects and writing at adilmoujahid.com.