Orbitally universal centers

Algaba A. García C. Gine J. Llibre J.
Nonlinear Analysis, Theory, Methods and Applications
Doi 10.1016/j.na.2020.111746
Volumen 195
2020-06-01
Citas: 0
Abstract
© 2020 Elsevier LtdIn this paper we define when a polynomial differential system is orbitally universal and we show the relevance of this notion in the classical center problem, i.e. in the problem of distinguishing between a focus and a center.
Center problem, Orbitally reversible, Universal center
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