Abstract
In the case of autonomous dynamical systems, it is better to base symmetry considerations on trajectories than on full solutions. In this setting topological arguments can be used; a special role is played in this context by time-independent Lie-point symmetries. As an application of this approach, we obtain results on the existence of stationary and/or periodic solutions.
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Gaeta, G. Autonomous systems, dynamical systems, LPTI symmetries, topology of trajectories, and periodic solutions. Int J Theor Phys 32, 191–199 (1993). https://doi.org/10.1007/BF00674404
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DOI: https://doi.org/10.1007/BF00674404