pp. 4–12A new paradigm for artificial intelligence based on group equivariant non-expansive operatorsAlessandra Micheletti
pp. 13–22On the dynamics of dilute gasesThierry BodineauIsabelle GallagherLaure Saint-RaymondSergio Simonella
pp. 30–35Gene Calabi at 100 – Memorable encounters with Eugenio CalabiJean-Pierre BourguignonBalázs Szendrői
pp. 70–71Book review: “Eugenio Calabi – Collected Works” by Jean-Pierre Bourguignon, Xiuxiong Chen and Simon Donaldson (Eds.)Joel Fine
pp. 71–73Book review: “Topological Methods in Hydrodynamics” by Vladimir I. Arnold and Boris A. KhesinDaniel Peralta-Salas