ON LIMIT CYCLES FOR A CLASS OF DIFFERENTIAL SYSTEMS WITH POSITIVE DEFINITE POLYNOMIAL

• 作者: Weide Zhang
• 来源期刊: 微分方程年刊：英文版
• 学科: 数学
• 关键词: 多项式微分系统 极限环 正定 不存在性 周期数
• 年，卷（期）: 2014,（4）
• 页码范围: 466-472
• 页数: 7页
• 分类号: O175.12

摘要

In this paper, the nonexistence, existence and the number of limit cycles for a class of differential systems with positive definite polynomial are considered, and the results obtained generalize and supplement those of [1].