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奇异三阶微分方程三点边值问题的正解

Positive solution of singular third order differential equation with three-point boundary value problem
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摘要 讨论了奇异三阶微分方程三点边值问题{um(t)+a(t)f(u(t))=0 u(0)=u(l)=0,u'(0)=u'(η),0 <η<1/2}的正解存在性。通过与一个线性算子相关的第一特征值的讨论,运用不动点指数定理,得到了正解存在的结论,其中允许h(t)在t=0和t=1处奇异。 In this paper,the existence of positive solution for singular third order differential equation boundary value problem {um(t)+a(t)f(u(t))=0 u(0)=u(l)=0,u'(0)=u'(η),0 η1/2} is considered.By the fixed-point index theorem on cone and the first eigenvalue criteria with spectral radius,we obtain the existence of positive solution,where is allowed to be singular at t=0 and t=1.
作者 赵微 高扬
出处 《齐齐哈尔大学学报(自然科学版)》 2011年第2期71-74,共4页 Journal of Qiqihar University(Natural Science Edition)
基金 黑龙江省自然科学基金项目(A200813) 大庆师范学院自然科学青年基金项目(08ZQ07) 黑龙江省青年科学基金项目(QC2009C99)
关键词 边值问题 正解 不动点指数 奇异 boundary value problem positive solution cone fixed point index singular
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