← Radical-FDRS: One-Dimensional Flattening and Elliptic–Chabauty Machinery on the Fixed Slice / R1 · The Cayley transition algebra
On the rational-edge sphere each face defect is the squareclass of the Cayley ratio ω(x) = (1 − x)/(1 + x) (seed: (25/39)², (17/28)², 233/1913 with 233 = g − c and 1913 = g + c), so a perfect cuboid exists iff the triple-Cayley-root surface has a rational point.
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