利用监
利用监-
作者利用监界点理论中的山路引理研究了一类非线性二阶差分方程边值问题解的存在性，获得了该边值问题有解的一个充分条件。
This article is concerned with the existence of solutions of boundary value problem for a class of nonlinear second-order difference equations . The author apply the Mountain Pass Lemma in the critical point theory and give a new result for the existence of solutions for this boundary value problem .