摘要
本文用上下解方法给出了含小参数ε＞０的非线性奇摄动边界问题（１．１）－（１．２）（周期边界问题为其特例）解的一致有效的渐近展开式．
In this paper we will give unifornily valid expansions of solutions for boundaiyvalue problenis (1.1)-(1.2) (tcontaining periodic boundary condition as a special case)witli a paranieter ε > 0, by nieans of the upper and lower solution niethod.
关键词
边值问题
奇摄动
非线性
渐近展开
uniformly valid expansion , singularly perturbation , bourdary value problem,upper and lower solutions
