Lassi Paunonen
About me
I am the leader of the Systems Theory Research Group (in mathematics) in the ITC faculty. My research interests especially include functional analysis, operator theory, theory of infinite-dimensional linear systems and robust control, stability of strongly continuous semigroups.
The main homepages of my research group and myself, as well as the Youtube and Instagram accounts can be found in the following addresses:
Research group homepage: https://sysgrouptampere.wordpress.com/
Personal homepage: https://lassipaunonen.wordpress.com/
Youtube account (teaching): Lassi Paunonen Teaching
Youtube account (group): Systems Theory Research Group
Instagram account (professional): https://www.instagram.com/paunonen_math/
Fields of expertise
Functional analysis, operator theory, theory of infinite-dimensional linear systems and robust control, stability of strongly continuous semigroups.
Research fields
Mathematics, Mathematical Systems Theory, Functional Analysis.
Latest publications
A non-uniform Datko–Pazy theorem for bounded operator semigroups
Paunonen, L., Seifert, D. & Vanspranghe, N., 2025, In: Studia Mathematica. 280, 2, p. 193-203Research output: Contribution to journal › Article › Scientific › peer-review
Limit-case admissibility for positive infinite-dimensional systems
Arora, S., Glück, J., Paunonen, L. & Schwenninger, F. L., 25 Sept 2025, In: Journal of Differential Equations. 440, 113435.Research output: Contribution to journal › Article › Scientific › peer-review
Robust output regulation for multi-dimensional heat equation under boundary control
Zhao, R. X., Guo, B. Z. & Paunonen, L., Jan 2025, In: Automatica. 171, 111956.Research output: Contribution to journal › Article › Scientific › peer-review
Stability of abstract coupled systems
Nicaise, S., Paunonen, L. & Seifert, D., 15 Jul 2025, In: Journal of Functional Analysis. 289, 2, 110909.Research output: Contribution to journal › Article › Scientific › peer-review
Weakly elliptic damping gives sharp decay
Paunonen, L., Vanspranghe, N. & Wang, R. P. T., 13 Oct 2025, In: Comptes Rendus Mathematique. 363, p. 1263-1275 13 p.Research output: Contribution to journal › Article › Scientific › peer-review
Accelerating Neural ODEs Using Model Order Reduction
Lehtimäki, M., Paunonen, L. & Linne, M.-L., 2024, In: IEEE Transactions on Neural Networks and Learning Systems . 35, 1, p. 519-531 13 p., 3175757.Research output: Contribution to journal › Article › Scientific › peer-review
Nonautonomous Controllers and Output Regulation of Unknown Harmonic Signals for Regular Linear Systems
Paunonen, L. & Afshar, S., 2024, In: IEEE Transactions on Automatic Control. 69, 7, p. 4320-4335 16 p.Research output: Contribution to journal › Article › Scientific › peer-review
Polynomial Stability of Coupled Waves with Weak Indirect Damping
Kosonen, J., Paunonen, L. & Vanspranghe, N., 2024, 26th International Symposium on Mathematical Theory of Networks and Systems MTNS 2024: Cambridge, United Kingdom, August 19-23, 2024. Elsevier, p. 31-36 6 p. (IFAC-PapersOnLine; vol. 58, no. 17).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Robust controllers for a flexible satellite model
Govindaraj, T., Humaloja, J.-P. & Paunonen, L., Mar 2024, In: Mathematical Control and Related Fields. 14, 1, p. 356-385 30 p.Research output: Contribution to journal › Article › Scientific › peer-review
Nonuniform stability of damped contraction semigroups
Chill, R., Paunonen, L., Seifert, D., Stahn, R. & Tomilov, Y., 2023, In: ANALYSIS AND PDE. 16, 5, p. 1089-1132 44 p.Research output: Contribution to journal › Article › Scientific › peer-review