conraction mapping principle

• 压缩映射原理

conraction mapping principle的用法和样例：

例句

1. The investigation of the existence of positive solutions of neutral delay differential equations with impulses is devoted by using the Banach cotraction principle.
   摘要利用压缩映射原理，讨论了中立型脉冲时滞微分方程正解的存在性。