摘要
以分层理论为基础。
The existence theorems of formal solutions of PDE are given.And the relationship between formal solutions and projective limit of Ehresmann chain is shown based on stratification theory.
出处
《应用数学和力学》
CSCD
北大核心
2003年第11期1133-1140,共8页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(19971054
40175014)