No magma of size 4 satisfies Equation 677.
Proof. Equation 677 forces every row of the Cayley table to be a permutation (the map z ↦ y ◇ z has inverse x ↦ x ◇ ((y ◇ x) ◇ y)), so candidates lie in the (4!)⁴ = 331,776 row-Latin tables. Exhaustive check: none satisfies Eq677.
[text written by Claude]
last edited by dwrensha at 2026-05-14 19:45:18 · history
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last edited by dwrensha at 2026-05-14 19:45:18 · history