By some abstract results of operator equation, the fourth order singular boundary value problem was discussed.

利用算子方程的一些抽象结果来讨论四阶奇异边值问题。

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By introducing the method of rotation operator, we study the singular limits for the boundary problem of rigid wall in hydrokinetics equations.

采用旋度算子的方法研究流体动力学方程组固壁边界问题的奇异极限。

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In this paper, by estimates of spectral of an integral operator, the authors give a theorem on the existence of solutions for first order differential difference equations with boundary condition.

摘要通过对积分算子谱的估计，作者给出了一阶线性微分差分方程在边值条件下解的存在唯一性定理。

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