三阶微分方程的非线性三点边值问题

The Nonlinear Three Point Boundary Value Problem of Third Order Differential Equations

通过上下解的构造及Ｎａｇｕｍｏ条件，研究三阶微分方程三点边值问题的微分不等式及解的存在性；在边界函数单调的条件下，研究非线性三点边值问题的有关结论．

Through constructing upper and lower solution and Nagumos condition,consider the differential inequalities and existence for three order differential equation with three point value problem.In the condition of value function satisfying monotony,research the nonlinear three point value problem and get relevant results.