Lean 4 formalization of Scarf→Brouwer→Nash via Ivanov’s indexed-order Scarf theorem, grid instantiation, product embedding, and the Nash map, plus an 80-item BrouwerBench.
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Formalizing Scarf, Brouwer, and Nash in Lean
Lean 4 formalization of Scarf→Brouwer→Nash via Ivanov’s indexed-order Scarf theorem, grid instantiation, product embedding, and the Nash map, plus an 80-item BrouwerBench.