Date: April 15, 2026 (Wednesday) at 4PM (UK time)

Speaker: Prof. Harald Andrés Helfgott, Paris City University, France

Topic: Growth, expansion and escape in groups

Prof. Harald Helfgott is a leading mathematician who made fundamental contribution to number theory, group theory, and additive combinatorics. He is widely known for his proof of the ternary Goldbach conjecture, as well as for foundational contributions to the study of growth and expansion phenomena in groups. In this talk, he will discuss growth and expansion in groups, including progress toward the celebrated Babai conjecture on the diameters of finite simple groups. See the blog announcement of this talk for more details.

Link to join: At the scheduled time, join the talk here. No registration is required. Alternatively, you can open Teams -> Calendar -> Meet now -> Join with an ID, and then enter Meeting ID: 355 943 966 829 62 and Passcode: nx6dB9Dz

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