Haihua Liang

activity

20142026

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

1 citations · 1 across the 6 of their papers we have counts for

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Showing 2016Show all

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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 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