Robuta

https://arxiv.org/abs/2403.00661 [2403.00661] A Floquet-Lyapunov Theory for nonautonomous linear periodic differential equations... Abstract page for arXiv paper 2403.00661: A Floquet-Lyapunov Theory for nonautonomous linear periodic differential equations with piecewise constant deviating... lyapunov theory https://scirp.org/reference/referencespapers?referenceid=1508459 Li, D.S. (2010) Morse Theory of Attractors for Infinite Dimensional Dynamical Systems via Lyapunov... Li, D.S. (2010) Morse Theory of Attractors for Infinite Dimensional Dynamical Systems via Lyapunov Functions. arXiv1003.0305v1 [math.DS] 1 Mar 2010.