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《Acta Analysis Functionalis Applicata》 2006-01
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On the Existence of Positive Solutions of Boundary Value Problems for Fourth Order Singular Differential Equations

ZHAO Zeng-qin Department of Mathematics,Qufu Normal University,Qufu Shandong 273165,China  
This paper investigates a class of boundary value problems for fourth-order singular differential equations.We give a sufficient condition for the existence of positive C~2solutions and positive C~3solutions by using the method of lower and upper solutions.
【Fund】: 国家自然科学基金(10471075);; 高教博士点专项科研基金(20050446001)
【CateGory Index】: O241.8
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