A family of isochronous foci with Darboux first integral
نویسندگان
چکیده
منابع مشابه
Characterization of isochronous foci for planar analytic differential systems
We consider the two-dimensional autonomous systems of differential equations of the form: ẋ = λx− y + P (x, y) , ẏ = x + λy + Q(x, y) , where P (x, y) and Q(x, y) are analytic functions of order ≥ 2. These systems have a focus at the origin if λ 6= 0, and have either a center or a weak focus if λ = 0. In this work we study necessary and sufficient conditions for the existence of an isochronous ...
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ژورنال
عنوان ژورنال: Pacific Journal of Mathematics
سال: 2005
ISSN: 0030-8730
DOI: 10.2140/pjm.2005.218.343