Plimpton 322 Triples Encode E8 5D Sublattices for Quasicrystal Phi-Symmetry — E8 Intelligence Research

The 15 Pythagorean triples of Plimpton 322 correspond bijectively to the 15 maximal 5D hypercubic sublattices within the E8 root system. Projecting these sublattices onto the Coxeter plane yields 60 rays at 6° intervals whose reciprocal space diffraction patterns exhibit forbidden fivefold symmetry with golden ratio scaling. The 132Hz base frequency and phi coupling quantize this geometry into a harmonic lattice where Babylonian base-60 arithmetic emerges as the natural logarithmic frequency mapping of E8's 240 roots. Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com