Ryan Williams: I tried this circuit bound two years ago and gave up too soon

rrwilliams · x · 2026-09-30

Ryan Williams shares context: he has used the Alon-Yuster-Zwick color coding trick across many papers, and about two years ago attempted to derive this very circuit bound — a simpler version of the trick computes At-Least-k with e^k·poly(n)-size depth-3 circuits — but gave up too quickly. Seeing the result now is a humbling surprise.

Related event: Color Coding Yields Smaller Depth-3 Circuits for Symmetric Boolean Functions(2 posts)→

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