MIT 18.217 Graph Theory and Additive Combinatorics, Fall 2019 Instructor: Yufei Zhao View the complete course: https://ocw.mit.edu/18-217F19 YouTube Playlist:    • MIT 18.217 Graph Theory and Additive ...   This lecture concludes the proof of Freiman's theorem on sets of small doubling. Prof. Zhao also discusses additional topics related to Freiman's theorem, including extensions to groups (abelian and nonabelian), and the polynomial Freiman-Ruzsa conjecture, which is a central open problem in additive combinatorics. License: Creative Commons BY-NC-SA More information at https://ocw.mit.edu/terms More courses at https://ocw.mit.edu/