November 1, 2026 · reading point

Proofs worth checking.

Lean formalizations, verified correspondences, and open reading points. Every story connects its mathematical statement to the code and evidence behind it.

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OpenAI Math 378 · Complexity theory

A verified negation of PositiveRateETH

Lean 4.34.1 derives ¬ PositiveRateETH from OpenAI’s bounded-width SAT theorem (at width 3), through an exact encoding converter and polynomial-overhead machine simulation.

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