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一类带积分边界条件的三阶边值问题正解的存在唯一性 被引量:2

The existence and uniqueness of positive solutions for a class of third-order boundary value problems with integral boundary conditions
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摘要 本文运用混合单调算子方法研究了带积分边界条件的三阶常微分方程边值问题-u(t)=f(t,u(t),u(ξt))+g(t,u(t)),t∈(0,1),ξ∈(0,1),u(0)=u″(0)=0,u′(1)=∫10q(t)u′(t)d t正解的存在唯一性,其中f:[0,1]×[0,+∞)^2→[0,∞)连续,g:[0,1]×[0,∞)→[0,∞)连续,q∈C[(0,1],[0,+∞)). In this paper,by using the mixed monotone operator method,we study the existence and uniqueness of positive solutions for the following third-order ordinary differential equations with integral boundary conditions:-u(t)=f(t,u(t),u(ξt))+g(t,u(t)),t∈(0,1),ξ∈(0,1),u(0)=u″(0)=0,u′(1)=∫10q(t)u′(t)d t where f:[0,1]×[0,+∞)^2→[0,∞)is continuous,g:[0,1]×[0,∞)→[0,∞)is continuous,q∈C[(0,1],[0,+∞)).
作者 何燕琴 韩晓玲 HE Yan-Qin;HAN Xiao-Ling(College of Mathematics and Statistic,Northwest University,Lanzhou 730070,China)
出处 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2020年第5期852-856,共5页 Journal of Sichuan University(Natural Science Edition)
基金 国家自然科学基金(11561063)。
关键词 三阶边值问题 积分边界条件 正解 存在唯一性 混合单调算子 Third-order boundary value problem Integral boundary condition Positive solution Existence and uniqueness Mixed monotone operator
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