Abstract
In this paper, we investigate the isochronicity and linearizability problem for a cubic polynomial differential system which can be considered as a generalization of the Riccati system. Conditions for isochronicity and linearizability are found. The global structure of systems of the family with an isochronous center is determined. Furthermore, we find the order of weak center and study the problem of local bifurcation of critical periods in a neighborhood of the center.
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One can download linearizability quantities \(i_1\), \(j_1\), \(\ldots \), \(i_8\), \(j_8\) and the Singular code to perform the decomposition of the variety from http://teacher.shnu.edu.cn/_upload/article/files/79/14/f36e87e342b8b0d6977e6debdeb3/3b818cf4-a6f7-4f07-8669-f4b78e48f733.txt.
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Acknowledgements
The first author acknowledges the financial support from the Slovenian Research Agency (research core funding No. P1-0306). The second author is partially supported by a CAPES grant. The third author has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement No. 655212, and is partially supported by the National Natural Science Foundation of China (No. 11431008) and the RFDP of Higher Education of China grant (No. 20130073110074). The first, second and third authors are also supported by Marie Curie International Research Staff Exchange Scheme Fellowship within the 7th European Community Framework Programme, FP7-PEOPLE-2012-IRSES-316338. The forth author is partially supported by the National Natural Science Foundation of China (No. 11501370). The first author thanks Professor Maoan Han for fruitful discussions on the work.
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Appendix
Appendix
Here are listed the first two pairs of the linearizability quantities of system (1.3).
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Romanovski, V.G., Fernandes, W., Tang, Y. et al. Linearizability and critical period bifurcations of a generalized Riccati system. Nonlinear Dyn 90, 257–269 (2017). https://doi.org/10.1007/s11071-017-3659-y
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DOI: https://doi.org/10.1007/s11071-017-3659-y