eisenstein-integers

Eisenstein integer triples with D₆ symmetry and hexagonal lattice applications

First independent byte-exact reproduction of the Zinoviev-Ericson (1999) K(13) = 1154 kissing configuration in R^13, with full optimization pipeline, 13 paper-grade structural findings on dim-13 saturation, rare-paths doctrine, and dual Constructor/Auditor methodology with both-hats discipline.

Interactive web tools for generating and visualizing propolis matrix codes — a hexagonal 2D barcode format using Eisenstein integer coordinates and Hamming error correction. Includes a live demo site with side-by-side QR comparison, a TypeScript encoder/renderer library that exactly matches the C++ reference implementation, and a comparison suite.