SinceMay 2019 I amĀ affiliated with the Department of Applied Mathematics. Before I was a post-doc at the University of Hamburg and the University of Wuppertal, where I also held a temporary professor position (`Vertretungsprofessor') in Fall 2018/19.

My researchĀ interests center around functional analysis and particularly operator theory with applications in the analysis and control of pde's.

In more detail, some research foci have been semigroup theory, functional calculus, input-to-state stability of infinite-dimensional systems and funnel control.

Besides, I likeĀ optimising constants.

Expertises

  • Mathematics

    • Admissibility
    • Semigroup
    • Operators
    • Control System
    • Dimensional System
    • Parabolic
    • Functional Calculus
  • Computer Science

    • Control

Organisaties

ZieĀ  hier

Publicaties

2025

On BIBO stability of infinite-dimensional systems (2025)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente. Wierzba, A. A.https://doi.org/10.3990/1.9789036565998A dual notion to BIBO stability (2025)Journal of mathematical analysis and applications, 545(2). Article 129156. Schwenninger, F. & Wierzba, A. A.https://doi.org/10.1016/j.jmaa.2024.129156The algebraic numerical range as a spectral set in Banach algebras (2025)Canadian journal of mathematics (E-pub ahead of print/First online). Blazhko, H., Homza, D., Schwenninger, F. L., de Vries, J. & Wojtylak, M.https://doi.org/10.4153/S0008414X25000124

Onderzoeksprofielen

I'm teaching several Bachelor and Master courses within the Applied Mathematics programme -- typically in the areas of analysis and control as well some service teaching. This includes courses within the Dutch-wide MasterMath programme. Furthermore, I coordinate the Math Track of the University's Honours Bachelor programme. Currently, I'm also involved in teaching within the Dutch Institute for Systems and Control.

Vakken collegejaar 2025/2026

Vakken in het huidig collegejaar worden toegevoegd op het moment dat zij definitief zijn in het Osiris systeem. Daarom kan het zijn dat de lijst nog niet compleet is voor het gehele collegejaar.

Vakken collegejaar 2024/2025

Vakken collegejaar 2023/2024

Currently running projects:

  • Predictive Avator Control and Feedback (together with Robotics and Computer Science): PhD student: Alexander Wierzba
  • Optimal Constant as Analytic Benchmarks (OCAB), NWO-funded (Open Competite), PhD student: Jens de Vries
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