Abstract
Lyapunov functions for general systems are difficult to construct. However, for autonomous linear systems with exponentially stable equilibrium, there is a classical way to construct a global Lyapunov function by solving a matrix equation. Consequently, the same function is a local Lyapunov function for a nonlinear system.In this paper, we generalise these results to time-periodic and, in particular, finite-time systems with an exponentially attractive zero solution. We show the existence of local Lyapunov functions for nonlinear systems. For finite-time systems, we consider a generalised notion of a Lyapunov function, which is not necessarily continuously differentiable, but just locally Lipschitz continuous; the derivative is then replaced by the Dini derivative.
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Dedicated to Jürgen Scheurle on the occasion of his 60th birthday
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Giesl, P., Hafstein, S. (2013). Local Lyapunov Functions for Periodic and Finite-Time ODEs. In: Johann, A., Kruse, HP., Rupp, F., Schmitz, S. (eds) Recent Trends in Dynamical Systems. Springer Proceedings in Mathematics & Statistics, vol 35. Springer, Basel. https://doi.org/10.1007/978-3-0348-0451-6_7
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DOI: https://doi.org/10.1007/978-3-0348-0451-6_7
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