摘要
利用在集合上定义映射和不动点原理,讨论了偶数阶中立型差分方程正解的存在性,根据中立型项取值的不同情况,得出了相应方程正解存在的充分条件。
Investigate the existence of positive solution for even neutral difference equations by using unfixed-polnt theory and defining the compresed Injection on a set. Obtain some sufficient conditions for existence of a postitive solution when the neutral term is under different conditions.
