Crystallographic Restriction, Computability, and Decidability: A Gap in Research — E8 Intelligence Research

FINDING: The search results contain no direct research on the crystallographic restriction theorem, computability, or decidability. The closest mathematical content is a graph recoloring theorem for treewidth-2 graphs, and a precision measurement of atomic wavelengths for probing fine-structure constant variability. | MATH: (1) Graph recoloring: For any d-degenerate graph, any (d+2)-coloring can transform to any other via adjacent colorings (Jerrum); treewidth-2 case concerns shortest transformation length. (2) Fine-structure constant α: requires lab wavelengths to <6×10⁻⁸ relative precision to detect α variability at high redshift. | CONNECTION: No direct geometric harmony ratios (0.382, 0.618, 0.786, 1.618, 2.618) or base-60 appear. The graph recoloring result touches on discrete symmetry (color permutations) but not crystallographic restriction. The α measurement is a fundamental constant probe, but no ratio emerges from the abstract. | DEPTH: 2 — The findings are peripheral to the Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com