EXISTENCE OF MULTIPLE POSITIVE SOLUTIONS TO SINGULAR SECOND ORDER NEUMANN BOUNDARY VALUE PROBLEMS

• 来源期刊: 微分方程年刊：英文版
• 学科: 数学
• 年，卷（期）: 2010,（2）
• 页码范围: 136-143
• 页数: 8页
• 分类号: O17

摘要

Using the fixed point index in cones, we study the existence of one and two positive solutions to singular second order Neumann boundary value problems under some conditions, which concerns the first eigenvalue of the relevant linear problem. Our results improve and extend some known ones in the previous literature.