A robust stability boundary of uncertain singular systems is proposed by utilizing singular value decomposition and the character of mode matrix.

并利用奇异值分解方法和模矩阵的性质，给出了使不确定广义系统鲁棒稳定的一个鲁棒界。

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In this paper, We discuss a class of boundary Value problems of second order singular perturbed nonlinear differential difference systems.

本文讨论一类二阶奇摄动非线性微分差分方程组的边值问题。

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By using fixed point index theory in a cone, we study the existence of positive solutions of boundary value problems for systems of nonlinear second order singular differential equations.

使用锥上拓扑度理论，研究二阶非线性奇异微分方程组两点边值问题正解的存在性。

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