Functional Inequalities in Metric Geometry - Lecture 4

Explore a comprehensive lecture on functional inequalities in metric geometry, focusing on their role as invariants in bi-Lipschitz embeddings of finite graphs into Banach and metric spaces. Delve into various discrete functional inequalities, including nonlinear versions of type and cotype, Markov convexity, diamond convexity, and the nonlinear spectral gap inequality. Examine how these invariants lead to nonembeddability results for specific graph structures such as the Hamming cube, l∞-grids, trees, diamond graphs, and expanders. Gain insights into the intricate relationship between functional inequalities and the geometric properties of graphs in metric spaces throughout this 1-hour and 14-minute presentation by Alexandros Eskenazis at the Hausdorff Center for Mathematics.