Pseudo-isochronicity in a class of septic differential systems
This paper deals with the pseudo-isochronicity for a class of septic differential systems. In this paper, we transform infinity into the origin so that the properties of infinity can be investigated with the methods developed for finite critical points. By calculating the singular point quantities and period constants of the origin, the problem of infinity being a pseudo-isochronous center has been solved in this case. (C) 2009 Elsevier Ltd. All rights reserved.
infinity singular point quantity period constant pseudo-isochronous center septic system