Open Research Index

One-Sided Affine Obstructions in Complete Bipartite Hat Guessing

Myunglae Jo

Palomar Registrypalomar/PALOMAR-2026-09-20-000013Sep 20, 2026math.COscore 0

A Lean 4 formalization of manuscript Theorem 2.4: for every finite field K with |K| at least 4 and every m at least 1, a coordinatewise-affine strategy on the class of size |K|-1 cannot be completed to a winning strategy by arbitrary deterministic rules on the opposite class of size m, with respect to the fixed finite-field labeling.

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