Five limit cycles for a simple cubic system
نویسندگان
چکیده
منابع مشابه
Existence Conditions of Thirteen Limit Cycles in a cubic System
As we know, the second part of the Hilbert problem is to find the maximal number and relative locations of limit cycles of polynomial systems of degree n. Let H(n) denote this number, which is called the Hilbert number. Then the problem of finding H(n) is divided into two parts: find an upper and lower bounds of it. For the upper bound there are important works of Écalle [1990] and IIyashenko a...
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ژورنال
عنوان ژورنال: Publicacions Matemàtiques
سال: 1997
ISSN: 0214-1493
DOI: 10.5565/publmat_41197_12