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Isochronous centers of a linear center perturbed by fourth degree homogeneous polynomial

✍ Scribed by J. Chavarriga; J. Giné; I.A. García


Publisher
Elsevier Science
Year
1999
Tongue
French
Weight
946 KB
Volume
123
Category
Article
ISSN
0007-4497

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Integrability of Centers Perturbed by Qu
✍ J. Chavarriga; I. Garcı́a; J. Giné 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 163 KB

The objective of this work is to give sufficient and necessary conditions for integrability of differential equation systems in the plane of the form x s yy 2 py1 Ž . 2qy1 Ž . Ž . Ž . Ž . qX x, y , y sx qY x, y , where X x, y and Y x, y are p y q quasi-2 2 2 2 homogeneous polynomials of degree 2 pq