奇异的

A conclusion is therefore reasoned out that there is a positive solution at least to the problems of singular elliptic boundary value.

从而得到了奇异椭圆方程的边值问题至少存在一个正解的结论。

To the knowledge of the authors, singular second-order differential equation boundary value problems have been studied extensively in the literature.

中文摘要：对大多数作者来说，奇异二阶微分方程的研究已经有了一些初步的研究成果(参见文献[19])。

Among them, the nonlinear impulsive problems and singular boundary problems arise from a lot of branches of applied mathematics and physics, which are at present active fields in analysis mathematics.

其中，非线性脉冲问题和奇异边值问题来源于应用数学和物理的多个分支，是目前分析数学中研究较为活跃的领域。

In this paper,we discuss the existence of positive solution for singular positive boundary value problem of second order differential equations by using a general cone fixed point theorem .

利用一个普通的锥不动点定理研究了二阶奇异非共振边值问题正解的存在性。

A necessary and sufficient coindition for the existence of positive solutions of a class of singular boundary value problems of higher order differential equations is given by means of the method of lower and upper solutions with the maximum principle.

摘要利用上下解方法和极大植原理给出了一类高阶微分方程的奇异边值问题正解存在的充分必要条件。

The robust stability analysis of three degrees of freedom helicopter singular systems is complex and difficult to design. Based on state-space theory, the linear dynamics model of three degrees of freedom helicopter was constructed.

针对三自由度直升机奇异系统鲁棒稳定性分析复杂，且难以设计稳定的控制器问题，基于状态空间方法建立了三自由度直升机模型的线性动力学系统模型。

In order to apply this principle to AC/DC power system, the switch cycle average singular perturbation models of typical converters were made.

建立交直流电力系统中典型电力电子元件的开关周期平均奇异摄动模型，并运用所提出的降阶原则，对简单交直流电力系统进行降阶研究。

In this paper, a new singular element about three dimensional cracks was formed and a new method to compute 3-D stress intensity factors was proposed.

构造了一种新的三维奇异单元，提出了一种有效计算三维裂纹应力强度因子新的数值方法。

Taking a border as an example, this paper demonstrates that the singular element can reflect the singularity of crack tip well.

以一维问题为例，推导论证了奇异单元能够很好的反映裂纹尖端应力场的奇异性。

In the paper, the methods above are studied for element solve singular problems the convergence of the method is proved and the error estimate is also obtained.

本文将讨论零空间为一维情况下Chebyshev 方法求解奇异问题的收敛性，得到了相应的渐近收敛速率。4。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。