Fields Medalist Timothy Gowers: ChatGPT 5.5 Pro Improves Open Math Bounds in Two Hours — 669 Points on HN

Gowers's Weblog / Hacker News·high signal

Timothy Gowers, Fields Medalist and Cambridge professor, tested ChatGPT 5.5 Pro on open problems from Mel Nathanson's additive number theory paper and reports the model improved an exponential upper bound to quadratic for sumset diameter in approximately two hours — a genuine research-level result, not retrieval of existing solutions. Gowers warns this has serious implications for PhD training, as traditionally 'gentle problems' that served as entry points for students are now trivially solvable by AI, fundamentally altering how mathematical research and intellectual contribution are defined.