Polynomial systems : a lower bound for the weakened 16th Hilbert problem
Li, Chengzhi (Peking University. Department of Mathematics)
Li, Weigu (Peking University. Department of Mathematics)
Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
Zhang, Zhifen (Peking University. Department of Mathematics)

Date:	2001
Abstract:	In this paper we provide the greatest lower bound about the number of (non-infinitesimal) limit cycles surrounding a unique singular point for a planar polynomial differential system of arbitrary degree.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; Versió publicada
Subject:	Polinomis ; Polynomial systems
Published in:	Extracta mathematicae, Vol. 16, Núm. 3 (2001) , p. 441-447, ISSN 0213-8743

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