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Description: What can we say about sets A of integers whose sumset A + A is small? Over the next several lectures, Professor Zhao discusses Freiman’s theorem, a foundational theorem in additive combinatorics, that characterizes sets with small doubling.
This lecture begins with a discussion and statement of Freiman’s theorem, and then basic tools including Ruzsa triangle inequality and Plünnecke–Ruzsa inequality.
Instructor: Yufei Zhao
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As Taught In:  Fall 2019 
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Graduate

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