Hebai Chen

most citedA sufficient and necessary condition of generalized polynomial Liénard systems with global centers

1 citations · 1 across the 2 of their papers we have counts for

collaborators

2 papers

math.CA2023

The number of limit cycles of Josephson equation

Xiangqin Yu, Hebai Chen, Changjian Liu

In this paper, the existence and number of non-contractible limit cycles of the Josephson equation $β \frac{d ^{2} Φ}{d t ^{2}} + (1 + γ cos Φ) \frac{d Φ}{d t} + sin Φ = α$ are studied, where $ϕ\…

math.DS2022★ 1 cited

A sufficient and necessary condition of generalized polynomial Liénard systems with global centers

Hebai Chen, Zhijie Li, Rui Zhang

The aim of this paper is to give a sufficient and necessary condition of the generalized polynomial Liénard system with a global center (including linear typer and nilpotent type).…