讨论Nagumo型条件结合符号条件下二阶反周期边值问题的存在性问题,借助经典的不动点定理得到至少存在一个解的充分条件.
We discuss the existence of solutions to second-order anti-periodic boundary value problems in presence of Nagumo type condition and sign condition. Our results are sufficient to guarantee the existence of at least one solution.