45:07
publiée le 10 juin 2026
Residual finiteness of graphs of free groups with cyclic edge groups
De Zachary Munro
$L^2$ spectral gap and group actions on Banach spaces
Apparaît dans les collections : Non linear functional analysis / Analyse fonctionnelle non linéaire, Exposés de recherche
Exploring the relations between algebraic and geometric properties of a group and the geometry of the Banach spaces on which it can act is a fascinating program, still widely mysterious, and which is tightly connected to coarse embeddability of graphs into Banach spaces. I will present a recent contribution, joint with Tim de Laat, where we give a spectral (hilbertian) criterion for fixed point properties on uniformly curved Banach spaces.
