The ICM 2010 satellite conference 'Geometry, Topology and Dynamics in Negative Curvature' afforded an excellent opportunity to discuss various aspects of this f

Ten high-quality survey articles provide an overview of important recent developments in the mathematics surrounding negative curvature.

Focussing on the mathematics related to the recent proof of ergodicity of the (Weil–Petersson) geodesic flow on a nonpositively curved space whose points are

Wigner's theorem is a fundamental part of the mathematical formulation of quantum mechanics. The theorem characterizes unitary and anti-unitary operators as sym

This easy-to-cite handbook gives the first systematic treatment of the (co)end calculus in category theory and its applications.