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一类奇异4阶常微分方程的两点边值问题 被引量:3

Two-point boundary value problems of a class of singular fourth-order ordinary differential equations.
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摘要 考察了4阶两点边值问题u(4)(t)=f(t,u(t),u′(t)),0〈t〈1,u(0)=u′(0)=u′(1)=u″(1)=0的正解,其中非线性项f(t,u,v)可以在t=0,t=1及u=0,v=0处奇异.结论表明这个问题可以具有1~3个正解,只要非线性项的连续部分在某些有界集上的"高度"都是适当的. The positive solutions are considered for the fourth-order two-point boundary value problemu(4)(t)=f(t,u(t),u′(t)),0t1,u(0)=u′(0)=u′(1)=u″(1)=0,where the nonlinear term may be singular at t=0,t=1 and u=0,v=0.The results show that the problem can have 1-3 positive solutions provided that the heights of continuous part of nonlinear term are appropriate on some bounded sets.
作者 姚庆六
出处 《浙江大学学报(理学版)》 CAS CSCD 北大核心 2010年第5期497-500,518,共5页 Journal of Zhejiang University(Science Edition)
基金 国家自然科学基金资助项目(10871059)
关键词 奇异常微分方程 边值问题 正解 存在性 多解性 singular ordinary differential equation boundary value problem positive solution existence multiplicity
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