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- W2000220296 abstract "Abstract In this paper, center conditions and bifurcation of limit cycles from the equator for a class of polynomial system of degree seven are studied. The method is based on converting a real system into a complex system. The recursion formula for the computation of singular point quantities of complex system at the infinity, and the relation of singular point quantities of complex system at the infinity with the focal values of its concomitant system at the infinity are given. Using the computer algebra system Mathematica, the first 14 singular point quantities of complex system at the infinity are deduced. At the same time, the conditions for the infinity of a real system to be a center and 14 order fine focus are derived respectively. A system of degree seven that bifurcates 13 limit cycles from the infinity is constructed for the first time." @default.
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- W2000220296 date "2009-04-01" @default.
- W2000220296 modified "2023-09-28" @default.
- W2000220296 title "Bifurcation of limit cycles at the equator for a class of polynomial differential system" @default.
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- W2000220296 doi "https://doi.org/10.1016/j.nonrwa.2007.11.021" @default.
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