上海大学学报(自然科学版) ›› 2025, Vol. 31 ›› Issue (6): 1057-1066.doi: 10.12066/j.issn.1007-2861.2321

• 数理化科学 • 上一篇    下一篇

带线段转向点奇摄动椭圆微分系统的边值问题

居阳, 冯依虎, 胡召平   

  1. 上海大学 理学院, 上海 200444
  • 收稿日期:2021-06-13 出版日期:2025-12-31 发布日期:2025-12-31
  • 通讯作者: 胡召平(1981-),男,副教授,博士,研究方向为微分方程与动力系统. E-mail:zhaopinghu@shu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(11271247,11572181,11632008)

Boundary value problem for singular perturbed elliptic difierential systems with a segment of turning points

JU Yang, FENG Yihu, HU Zhaoping   

  1. College of Sciences, Shanghai University, Shanghai 200444, China
  • Received:2021-06-13 Online:2025-12-31 Published:2025-12-31

摘要: 研究一类带线段转向点的奇摄动椭圆型微分方程的边值问题.首先,利用多尺度方法构造出带线段转向点的形式近似解;然后,借助比较定理,证明解的近似展开式的一致有效性.

关键词: 转向点, 奇摄动, 椭圆微分系统, 边值问题, 一致有效性

Abstract: Boundary value problem for a class of elliptic differential equations with a segment of turning points is considered. Firstly, using the method of multiple scales the formal asymptotic solution with turning points is constructed. And then, the uniform validity for the asymptotic expansion of the solution is proved by using the comparison theorem.

Key words: turning point, singular perturbation, elliptic differential system, boundary value problem, uniform validity

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