Kai Zehmisch

Kai Zehmisch is a Professor of Mathematics at Ruhr University Bochum, holding the Chair of Symplectic Geometry within the Faculty of Mathematics. His research focuses on symplectic and contact topology, particularly Reeb dynamics, holomorphic curves, and geometric analysis. He is affiliated with the Floer Center of Geometry and contributes to collaborative projects like CRC/TRR 191.

Key research areas include symplectic capacities, contact structures, and applications of polyfold theory. Notable contributions include foundational work on overtwisted contact manifolds, Weinstein conjecture validations, and symplectic fillings. His recent publications address non-fillability via polyfolds and geometric rigidity in cotangent bundles.

Zehmisch's work bridges dynamical systems with geometric topology, leveraging advanced techniques like holomorphic discs and surgery methods. His research often intersects with algebraic geometry and Finsler geometry, reflecting a broad yet deep engagement with modern geometric problems.