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Cyclicity of Degenerate Polycycles Through a Saddle–Node and Two Hyperbolic Saddles

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This paper deals with the cyclicity of a kind of degenerate planar polycycles through a saddle?node and two hyperbolic saddles, where the hyperbolicity ratio of the saddle (which connects the saddle?node with hp?connection) is equal to 1 and that of the other saddle is irrational.



出版机构:Institute of Mathematics, Chinese Academy of Sciences and Chinese Mathematical Society刊物名称:Acta Mathematica Sinica, English Series
出版时间:2005
ISSN:1439-8516
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