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Theoretical computer science

Beyond the square-root exponent for depth-three circuits

OpenAI research collection · 1 manuscript · Source checked 2026-10-19

OpenAI's result summary

Constructs a single language in deterministic polynomial time whose n-bit membership function requires 2^{ω(\sqrt n)} total gates in unbounded-fan-in OR–AND–OR circuits, at every sufficiently large input length. This crosses the square-root-exponent threshold for explicit depth-three Boolean circuit lower bounds.

Read the manuscripts

Short excerpts below come from OpenAI's abstracts. The full abstract and original PDF preserve the paper's precise scope.

MANUSCRIPT 01

Beyond the Square-Root Exponent for Depth-Three Boolean Circuits

We construct a language in deterministic polynomial time whose n-bit membership function requires 2^{ω(\sqrt n)} gates in an unbounded-fan-in OR–AND–OR circuit. The bound holds at every sufficiently large input length and counts all gates, including the bottom layer.

This PDF is listed in OpenAI's formalization catalogue. See the scope and dependencies before interpreting coverage.

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