Upper and lower solution method for fourth-order four-point boundary value problems

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摘要

This paper is concerned with the fourth-order ordinary differential equationu(4)(t)=f(t,u(t),u″(t)),00. Some new existence results are obtained by developing the upper and lower solution method and the monotone iterative technique.

论文关键词：Lower and upper solution method,Fourth-order ordinary differential equation,Four-point boundary conditions

论文评审过程：Received 18 November 2004, Available online 21 November 2005.

论文官网地址：https://doi.org/10.1016/j.cam.2005.09.007