On persistent centers
نویسندگان
چکیده
منابع مشابه
Strongly persistent centers for trigonometric Abel equations
In this paper we introduce the notion of strongly persistent centers, together with the condition of the annulation of some generalized moments, for Abel differential equations with trigonometric coefficients as a natural candidate to characterize the centers of composition type for these equations. We also recall several related concepts and discuss the differences between the trigonometric an...
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ژورنال
عنوان ژورنال: Bulletin des Sciences Mathématiques
سال: 2009
ISSN: 0007-4497
DOI: 10.1016/j.bulsci.2008.08.007