数学物理学报

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次线性奇异三点边值问题的正解

韦忠礼   

  1. 山东建筑大学理学院 山东 25010
  • 收稿日期:2005-01-19 修回日期:2006-07-05 出版日期:2008-02-25 发布日期:2008-02-25
  • 通讯作者: 韦忠礼
  • 基金资助:
    山东省重大科技专项基金(2005GG21006001)资助

Positive Solutions of Some Singular Sub-linear Three-point

Boundary Value Problems

Wei Zhongli   

  1. School of Sciencs, Shandong Jianzhu University, Shandong 250101

  • Received:2005-01-19 Revised:2006-07-05 Online:2008-02-25 Published:2008-02-25
  • Contact: Wei Zhongli

摘要: 该文主要研究二阶次线性奇异三点边值问题的正解的存在性,利用上下解方法和比较定理给出了C[0,1] 和 C1[0,1]$ 正解存在的充分必要条件,其中的非线性项 f(t,x) 可以在 x=0, t=0 和 t=1 处奇异.

关键词: 奇异三点边值问题, 正解, 上下解, 比较定理

Abstract: This paper investigates the existence of positive solutions for second-order singular sub-linear three-point boundary value problems. A necessary and sufficient condition for the existence of C [0,1] as well as C1[0,1] positive solutions is given by constructing lower and upper solutions and with the comparison theorem. The nonlinearity f(t,x) may be singular at , \ t=0 and /or t=1 .

Key words: Singular three-point boundary value problem, Positive solution, Lower and upper solutions, Comparison theorem

中图分类号: 

  • 34B16