Mathematical Systems Theory and Differential Equations
- Feedback control of nonlinear systems
- Applications to bio-reactors and electrical drive systems
- Stability and robustness of time-varying linear systems
- Differential-algebraic (time-varying) linear systems (DAEs)
- Indefinite Sturm-Liouville equations and differential equations with floating singularities
- Spectral and perturbation theory in inner product spaces
- Second order systems
- Homoclinic and heteroclinic phenomena
- Reversible and equivariant dynamics
