這篇論文是配合上解及下解(Upper and Lower Solution) 找出適當的算子,再利用 Schauder 定點定理,探討p-Laplacian算子方程在Sturm-Liouville-Like四點邊界值下對稱正解的存在性。 In this paper, the Sturm–Liouville-like four-point boundary value problem with a p-Laplacian operator. By the use of Schauder fixed point theorem and upper and lower solution, we explore the p-Laplacian operator equation in the Sturm-Liouville-Like a four-point boundary value under symmetric Existence of Positive Solutions .