A profile of Jacob Tsimerman, who won the Fields Medal last week and is taking a leave from the University of Toronto to join OpenAI and work on AI safety (Ben Cohen/Wall Street Journal)

TechmemeAugust 2, 2026en

Ben Cohen / Wall Street Journal : A profile of Jacob Tsimerman, who won the Fields Medal last week and is taking a leave from the University of Toronto to join OpenAI and work on AI safety — Jacob Tsimerman won the biggest prize in math. Now he's working on the most important problem of his career.

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