Yang Liu
Abstract:
In this paper, we use the lower and upper solution method to
obtain an existence theorem for the fourth-order
boundary-value problem
where
,
are continuous and may be nonlinear, and
denotes the Riemann-Stieltjes integral.
Submitted October 19, 2007. Published April 10, 2008.
Math Subject Classifications: 34B15.
Key Words: Fourth-order boundary-value problem; upper and lower solution;
Riemann-Stieltjies integral; Nagumo-type condition.
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Yang Liu Department of Mathematics, Yanbian University Yanji, Jilin 133000, China. Department of Mathematics, Huaiyin Teachers College Huaian, Jiangsu 223300, China email: liuyang19830206@yahoo.com.cn |
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