西北师范大学学报(自然科学版)2026,Vol.62Issue(5):98-103,6.DOI:10.16783/j.cnki.nwnuz.2026.05.011
无穷半正条件下一类二阶周期边值问题正解的存在性
Existence of positive solutions for a class of second-order periodic boundary value problems under infinite semipositone conditions
摘要
Abstract
By using the upper and lower solution method,the existence result of positive solutions for second-order periodic boundary value problem{u"(t)+a(t)u(t)=λf(u(t)),t ∈(0,2π),u(0)=u(2π),u'(0)=u'(2π)is obtained,where λ>0 is a parameter,a ∈ C[0,2π],0<a(t)<1/4 and f∈C([0,∞),R).关键词
周期边值问题/无穷半正条件/正解/上下解方法/特征函数Key words
periodic boundary value problem/infinite semipositone condition/positive solution/upper and lower solution method/eigenfunction分类
数理科学引用本文复制引用
陈丹丹,路艳琼..无穷半正条件下一类二阶周期边值问题正解的存在性[J].西北师范大学学报(自然科学版),2026,62(5):98-103,6.基金项目
国家自然科学基金资助项目(12361040,12461035) (12361040,12461035)
青海省自然科学基金资助项目(2025-ZJ-722) (2025-ZJ-722)