Jianfeng Huang

activity

20162020

most citedLimit cycles of planar system defined by the sum of two quasi-homogeneous vecter fields

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

collaborators

3 papers

math.CA2020

A new Chebyshev criterion and its application to planar differential systems

Jianfeng Huang, Haihua Liang, Xiang Zhang

This paper establishes a new Chebyshev criterion for some family of integrals. By virtue of this criterion we obtain several new Chebyshev families. With the help of these new fami…

math.CA2017★ 1 cited

Limit cycles of planar system defined by the sum of two quasi-homogeneous vecter fields

Jianfeng Huang, Haihua Liang

In this paper we consider the limit cycles of the planar system $\frac{d}{d t} (x, y) = X_{n} + X_{m},$ where $X_{n}$ and $X_{m}$ are quasi-homogeneous vector f…

math.CA2016

A geometric criterion for equation $x ˙ = \sum_{i = 0}^{m} a_{i} (t) x^{i}$ having at most $m$ isolated periodic solutions

Jianfeng Huang, Haihua Liang

This paper is devoted to the investigation of generalized Abel equation $x ˙ = S (x, t) = \sum_{i = 0}^{m} a_{i} (t) x^{i}$ , where $a_{i} \in C^{\infty} ([0, 1])$ . A solution $x (t)$ is called…

A new Chebyshev criterion and its application to planar differential systems

Limit cycles of planar system defined by the sum of two quasi-homogeneous vecter fields

A geometric criterion for equation x˙=∑i=0m​ai​(t)xi having at most m isolated periodic solutions

A geometric criterion for equation $x ˙ = \sum_{i = 0}^{m} a_{i} (t) x^{i}$ having at most $m$ isolated periodic solutions