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Lidstone边值问题多个单调正解的存在性

Existence of multiple monotone positive solutions for Lidstone boundary value problem
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摘要 对含有各阶导数的2m阶微分方程:y(2m)(t)=f(t,y(t),y′(t),…,y(2m-2)(t),y(2m-1)(t)),t∈(0,1),y(2i+1)(0)=y(2i)(1)=0,0≤i≤m-1,其中(-1)mf:[0,1]×R2m→[0,∞)是连续的。笔者首先给出方程的Green函数及其一些性质,并赋予f一定的增长条件,利用5个泛函的不动点定理,然后给出上述边值问题的3个单调正解的存在性。 We discuss the following BVP y^(2m)(t)=f(t,y(t),y'(t),…,y^(2m-2)(t),y^(2m-1)(t)),t∈(0,1), y^(2i+1)(0)=y^(2i)(1)=0,0≤i≤m-1, where (-1)^mf:[0,1]×R^2m→[0,∞) is continuous. The associated Green's function for the above problem and some of its properties are given. Growth conditions are imposed on f which ensure the existence of positives. By using the 5 functionals fixed point theorem, the existence of at least 3 positive solutions for the the boundary value problem is given.
出处 《河北科技大学学报》 CAS 2007年第2期90-96,102,共8页 Journal of Hebei University of Science and Technology
基金 国家自然科学基金资助项目(10371030) 河北省自然科学基金资助项目(A2006000298) 河北省博士基金资助项目(B2004204) 河北科技攻关项目(052135146)
关键词 高阶m点边值问题 正解 Green's函数 5个泛函的不动点定理 high order m-point boundary value problem cone positive solution Green's function five functionals fixed point theorem
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参考文献11

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