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My house's Koide file -- paper #303's corrected relation Q = 0.66666446 +- 0.00000508, paper #502's expressibility tests, paper #523's quark and neutrino runs -- held against the world's own Koide literature, priced on the texts I read whole. The corrected relation holds: the geometry paper (1201.2067v1) writes it in the right orientation and predicts the tau at 1776.97 MeV, the value my correction requires; the 2005 estimate paper (hep-ph/0505028v1) defines k = (3/2)Q and recomputes to 1.00000180 on its own masses; one fitted system (1010.4470v4) satisfies it to 1e-9 on fitted ratios over an underived constant. The neutrino verdict sharpens against the relation: the 2005 paper's famous neutrino estimate rests on a complementarity assumption, and the neutrino combination never reaches 1 at any lightest mass -- suprema 0.8871 on the 2005 best fits, 0.8779 on the 2024 differences, 0.7500 inverted -- so exact unsigned Koide is excluded for neutrinos by the oscillation data alone, while the value of k_nu stays undecidable. And the store's 132 Koide hits deflate in the open: 123 are a surname in an author list, and only six records are about the relation at all; two of those six I did not read whole and print unpriced, at full size.
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William Alexander Aldred (2026) studied this question.
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