Lyapunov and other spectra : a survey ∗
نویسنده
چکیده
Motivated by the basic problem of studying stability of nonautonomous linear systems, different definitions of spectra have been proposed over the years. We review some of these definitions, paying particular attention to how the spectra may be computed. Since the spectra are given by intervals of the real line, one would like to compute the endpoints of these intervals. As it turns out, these endpoints may coincide with the Lyapunov exponents (LEs) of the system. For this reason, we will review computational methods which have been used to approximate the LEs.
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