A fast interactive Sudoku solver written in Javascript. Handles many Sudoku variants including Killer Sudoku and Jigsaw Sudoku.
An infinitly* zoomable Stern-Brocot Tree. This structure contains all positive rational numbers in their lowest form, and in order.
An article showing how to define a simple, efficient enumeration of the rational numbers.
An interactive demo of Reed-Solomon error correction. It also explains the algorithm at a high level assuming knowledge of polynomial arithmetic and solving linear equations.
L-systems are parallel rewriting systems commonly used to generate fractals and other complex geometric patterns. They work by repeatedly applying simple transformation rules to an initial string of symbols, producing intricate self-similar structures.
An interactive 3D visualization tool for exploring different color spaces (RGB, HSV, HSL). Navigate through color spaces in both 2D slices and 3D volumes, with support for different distance metrics.
Collection of logic and math puzzles.