Computer science professor, Stanford UniversityFifteen years ago, Motwani was on a team that upended centuries of mathematical tradition (with the discovery of a short way to check long proofs). But he's better known as a mentor to his most famous students, Larry Page and Sergey Brin. Off campus, he's continuing his career as an angel investor by helping pick startups for this year's TechCrunch20 conference.
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