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四阶微分方程两点边值问题解的存在唯一性
引用本文:高永馨,余培照.四阶微分方程两点边值问题解的存在唯一性[J].中国民航学院学报,2012(1):60-63.
作者姓名:高永馨  余培照
作者单位:中国民航大学理学院,天津300300
摘    要:讨论了非线性四阶常微分方程y(4)=f(x,y,y’,y”,y”’)在混合两点边值条件y’(a)=0,y”(a)+y”(6)=0,y(b)=0,y”’(b)=0或y’(a)=0,y”'(a)+y'”(b)=0,y(b)=0,y”(6)=0下,解的存在唯一性。其中f在a,b]×R4上连续且满足Lipschitz条件。并在推广后的Lipschitz条件与Banach压缩映射原理基础上,得到一些新的存在唯一性结果。

关 键 词:非线性四阶微分方程  混合两点边值问题  Green函数  解的存在唯一性

Existence and uniqueness of solutions of mixed two-point boundary value problems for fourth-order differential equation
GAO Yong-xin,YU Pei-zhao.Existence and uniqueness of solutions of mixed two-point boundary value problems for fourth-order differential equation[J].Journal of Civil Aviation University of China,2012(1):60-63.
Authors:GAO Yong-xin  YU Pei-zhao
Institution:(College of Science, CA UC, Tianjin 300300, China)
Abstract:The authors study the existence and uniqueness of solutions of the fourth-order ordinary differential equation y(4) = f(x ,y,y' ,y" ,y" ) with the mixed two-point boundary conditions y' (a) = 0,y" (a) + y" (b) = 0,y (b) = 0,y" (b) = 0 or y' (a) = 0, y" (a) + y'" (b) = 0, y (b) = 0, y" ( b ) = 0 where the function is continuous on a, b ] × R4 and satisfies the Lipschitz condition. Some new existence and uniqueness results are obtained by developing the Lipschitz condition and the Banach contraction mapping principle.
Keywords:nonlinear fourth-order differential equation  mixed two-point boundary value problem  Green's function  existence and uniqueness of solutions
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