Felix Leopold Schwenninger is an Associate Professor at the University of Twente, affiliated with the Digital Society Institute and working in Mathematical Systems Theory. His research lies at the intersection of functional analysis, operator theory, and control systems, with a strong focus on semigroups, admissibility, and functional calculus. His research interests include: Functional Analysis and Operator Theory Admissibility and Controllability in Infinite-Dimensional Systems Semigroup Theory and Evolution Equations Functional Calculus for Operators Numerical Range and Spectral Theory Mathematical Foundations of Control Systems His recent publications (2024–2025) show a strong trend in duality concepts in stability, sharp bounds in functional calculus, and structural properties of operators in Banach spaces. These works are primarily theoretical, contributing to the rigorous mathematical underpinnings of control and operator theory. Scientific contributions and service include: Associate Editor, Optimal Control Applications and Methods (since 2021) Active publication in top mathematical journals and preprint servers (e.g., arXiv) Contributor to conference presentations, including on Barron spaces and embeddings He has supervised at least one PhD student (T. Heeringa) and continues to be actively involved in research, editorial work, and academic collaboration. He is part of a vibrant network in applied mathematics and systems theory, with international collaborations evident in recent outputs.


