←Back to NewsAI News/ReasoningnewsReasoningBenchmarksVals AI's Ten Claude Agents Formally Prove a Century-Old Math ProblemTen Claude Sonnet 5.5 agents collaborated for 15 hours to produce a 17,895-line Lean proof for the Thomson problem at N=7.SourceVals AIPublishedSep 29, 2026, 2:16 AMAuthorAlphaSignal NewsroomRead1 min readTen Claude Sonnet 5.5 agents collaborated for 15 hours to produce a 17,895-line Lean proof for the Thomson problem at N=7.Reporting is indexed from AlphaSignal. Rights remain with the original publisher and cited sources.Read original report ↗Next readsVals AI · newsVals AI's MysteryMechanism Benchmark Shows GPT-6 Astra Tops Science Test at 53%Vals AI · newsVals AI Finds Claude Opus 5.5 Beats GPT-6 Astra on Math ProofsEpoch AI · newsGPT-6 Astra Cracks a Decade-Old Voting Theory Problem Nobody Could Solve
