The 16th Hilbert problem for discontinuous piecewise isochronous centers of degree one or two separated by a straight

M Esteban1, J Llibre2, C Valls3

  • 1Dept. Matemática Aplicada II and Instituto de Matemáticas (IMUS), Escuela Técnica Superior de Ingeniería de la Universidad de Sevilla, Camino de los Descubrimientos s/n, 41092 Sevilla, Spain.

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