A. in Applied Mathematics from the University of California at Berkeley.

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The same year, Mr Kaczynski worked as an assistant professor of mathematics at the University of California at Berkeley, where he was widely recognised as a teacher likely to get tenure.

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Thailand native Supap Kirtsaeng, a mathematics student at the University of Southern California, noticed that some of the college textbooks he used and sampled from his local college bookstore were selling at a lower price in Thailand than here in the United States.

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Among his degrees are a BA in Mathematics and BS in Molecular Biology from the University of California, San Diego and a PhD in Biology from MIT.

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