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math.DS2026
Complete solution to the weak persistent center and isochronous center problems of cubic polynomial systems
Feng Li, Huimei Liu, Chen Cao +1
In this paper, we investigate weakly persistent centers for several classes of planar cubic differential systems, including systems with a nondegenerate linear center and systems w…
math.DS2017
Center and isochronous center of a class of quasi-analytic switching systems
Feng Li, Pei Yu, Yirong Liu +1
In this paper, we study the integrability and linearization of a class of quadratic quasi-analytic switching systems. We improve an existing method to compute the focus values and…
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…