Abstract
DR. FRANK MORLEY has given in NATURE of January 9, p. 72, a very elegant proof of my hexlet theorem which incidentally has enabled me to solve, almost at sight, a further problem on which I had been spending fruitless months. He derives the hexlet with its attendant trio in general from a very simple assemblage, by inversion, namely, from a central sphere surrounded by a ring of six equal spheres between two parallel planes, or spheres of zero bend. The latter invert into two of the spheres of the trio, the central sphere being the third.
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SODDY, F. The Hexlet. Nature 139, 154 (1937). https://doi.org/10.1038/139154a0
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DOI: https://doi.org/10.1038/139154a0
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