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Lijie Chen

Lijie Chen

OpenAI researcher and lead author

Appears in 1 story

Stories

AI systems begin producing original mathematics

New Capabilities

Credited as author of the unit-distance disproof

For 80 years, mathematicians believed square grids were the best way to pack points at distance exactly 1 apart on a plane. On May 20, an internal OpenAI reasoning model produced a counterexample, using algebraic number theory to beat the grid by a small polynomial factor. Nine outside mathematicians verified the proof.

Updated 16 hours ago