1 citations · 2 across the 3 of their papers we have counts for
3 papers
math.DS2016★ 1 cited
Center-focus determination and limit cycles bifurcation for homogeneous weight singular point
Tao Liu, Feng Li, Yirong Liu +1
The quasi-homogeneous (and in general non-homogeneous) polynomial differential systems have been studied from many different points of view. In this paper, Center-focus determinati…
math.DS2016★ 1 cited
A kind of bifurcation of limit cycle from nilpotent critical point
Yirong Liu, Feng Li
In this paper, an interesting and new bifurcation phenomenon that limit cycles could be bifurcated from nilpotent node (focus) by changing its stability was investigated. It is dif…
math.DS2015
Analytic integrability of two lopsided systems
Li Feng, Yu Pei, Liu Yirong
In this paper, we present two classes of lopsided systems and discuss their analytic integrability. The analytic integrable conditions are obtained by using the method of inverse i…