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Olympiad-level Formal Mathematical Reasoning with Reinforcement Learning (AlphaProof)

Google DeepMind·November 12, 2025

AlphaProof Team, Google DeepMind

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TL;DR

Describes AlphaProof, an AlphaZero-style RL agent that proves competition math in the Lean theorem prover, trained on millions of auto-formalized problems with test-time RL — part of DeepMind’s silver-medal IMO result.

Why it matters

The first peer-reviewed (Nature) account of an RL system reaching near-medalist formal-math performance; a landmark for verifiable, neuro-symbolic reasoning.

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