SMRTR Science & EngineeringAug 4, 2025Scientific American

How Teen Mathematician Hannah Cairo Disproved a Major Conjecture in Harmonic Analysis

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Seventeen-year-old Hannah Cairo disproved the Mizohata-Takeuchi conjecture, a decades-old mathematical problem about wave behavior on curved surfaces. After discovering a counterexample while working on a homework assignment at UC Berkeley, Cairo published her findings and presented at an international conference. Now pursuing a PhD at 18, the Bahamian-born mathematician specializes in Fourier restriction theory, describing her work as exploring "points, lines and waves" while finding belonging in mathematics despite personal challenges.

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