Center and isochronous center at infinity for differential systems.
Here, center and isochronous center conditions are investigated for differential systems at infinity. The authors give a suitable transformation by which infinity can be transferred into the origin. The properties of infinity are studied using well-known methods which are used for the origin. As an application, the authors discuss the conditions for infinity to be a center or an isochronous center for a class of rational differential systems.
scientific article; zbMATH DE number 2055853