Which mathematician founded an e-commerce platform that initially specialized in selling textbooks before expanding to become one of the world's largest online retailers?

The intersection of mathematics and e-commerce has created powerful algorithms and platforms that revolutionized how we shop online. Behind many of today's sophisticated recommendation engines, pricing models, and search algorithms are mathematical principles that drive user experience and business success. This trivia question explores a notable figure who bridged these two worlds.

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Jeff Bezos (Amazon) - Bachelor's degree in Electrical Engineering and Computer Science with extensive work in mathematics
Pierre Omidyar (eBay) - Master's in Computer Science with focus on computational algorithms
Jack Ma (Alibaba) - Degree in Mathematical Economics before teaching English and founding Alibaba
Reed Hastings (Netflix) - Master's in Computer Science with mathematical modeling background