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唯一性

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By employing the local Lipschitz condition and Picard sequence, the local existence-uniqueness of solutions of stochastic functional differential equations of Ito-type is firstly obtained. Furthermore, a continuation theorem for stochastic functional differential equations of Ito-type is given by using stochastic analysis technique and the quasi-boundedness condition. Finally, by establishing some delay differential inequalities and using properties of H_m-functions, a stochastic version of Wintner theorem and the global existence-uniqueness of solutions of stochastic functional differential equations of Ito-type are given. The results generalize the earlier publications.

首先,利用局部Lipschitz条件和Picard序列,获得了伊藤随机泛函微分方程解的局部存在唯一性;其次,利用随机分析技巧和拟有界条件,建立了伊藤随机泛函微分方程解的延拓定理;最后,通过建立一些时滞微分不等式和利用H_m-函数的特性,得到了Wintner定理的随机版本和伊藤随机泛函微分方程解的全局存在唯一性,推广了已有的一些结果。

In 2005 Zhou Houqing proved a theorem about the uniqueness of meromorphic function, we consider if we can weak the condition CM to weight using the idea of sharing value with weight so as to get a better conclusion.

权分担是亚纯函数唯一性理论中的重要内容。2005年周后卿证明了一个关于亚纯函数唯一性的定理,考虑能否运用权分担的思想将CM分担减弱为权分担,从而得到更好的结论。

We have proved that there exist only one type of cubic polynomial thermal minimal surface. Some basic properties of it have been discussed and the free-selfintersect region is given. In additional, the quartic minimal surface is discussed.

在本文中我们从等温参数化出发,利用等温参数极小曲面的调和性质讨论了参数多项式极小曲面的存在性和唯一性问题,证明了三次等温参数多项式极小曲面的唯一性,给出了高次参数多项式曲面是极小曲面的一个条件,并在此基础上给出了若干高次参数多项式极小曲面的例子。

We establish several unique embedding results for 3-connected graphs on orientable surfaces which admit relatively large facial walks and representativity and hence generalize Thomassen's uniqueness theorem on LEW-embeddings.

本文给出了几个关于一般可定向曲面上嵌入图的唯一性定理。结果表明:一些具有大的面迹的可定向嵌入仍然具有唯一性。这在本质上推广了C.Thomassen在LEW-嵌入方面的工作。

Meanwhile, we also provide methods for computing the weighted polar decomposition, and study error bounds for the approximate generalized positive semidefinite polar factor and perturbation bounds for weighted polar decomposition in various norms.

针对这个新的矩阵分解,我们证明了其唯一性定理,给出了其唯一性条件,讨论了其极因子的最佳逼近性质;同时,我们还探讨了矩阵加权极分解的计算问题,研究了由迭代算法引起的极因子的误差界,极因子在各种范数下的各种形式的扰动界等。

In Chapter two, it is given of the three-dimensional boundary element and the boundary element space, Sobolev space for the contact boundary element problem with friction; it is proved of existence and uniqueness of the solution by variation inequality for the contact Boundary Element Method matrix equation under two kinds of condition that the contact zone is fixed and the contact zone is increasing along with the load; it is given of the expressionfor the error of the exact solution and the boundary element solution.

第2章,给出三维边界单元及边界元空间、有摩擦接触边界元问题的Sobolev空间,利用变分不等式证明了不变接触区和随载荷可变接触区两种情况下的接触边界元法矩阵方程解的存在唯一性,给出了准确解与边界元解的误差表达式,还证明了三维弹塑性摩擦接触问题凝缩矩阵解的存在唯一性,为三维弹塑性摩擦接触边界元法奠定数学基础。

And the sufficient and necessary conditions are obtained and the uniqueness of T is discussed and an algorithm for solving the inverse problem is provided. The other kind of structure inverse eigenvalue problem is for unitary Hessenberg matrices with positive subdiagonal elements. That is, a unitary Hessenberg matrices with positive sub-diagonal elements can be constructed when its eigenvalues and the eigenvalues of H_(11) and H_(22) are known. Here H_(11) and H_(22) are rank-one modifications of k × k leading principal submatrix of H and of its × remain submatrix respectively. In the end, the uniqueness of H and an algorithm is obtained.

文中首先讨论了这三组特征值之间的交错关系,接着确定了该逆问题有解的充要条件,并论证了其解的唯一性问题,最后给出了相应的数值算法;本文第二个问题解决的是一类不可约的酉Hessenberg阵的逆特征值问题:即一个不可约的酉Hessenberg阵可以由它的特征值、它的前k阶秩一修正的顺序主子阵的特征值以及它的后n—k阶余子阵的秩一修正阵的特征值来确定,文中最后讨论了唯一性和相应的算法。

Then, it studies the supply chain management system as a complex system to confirm the state existing during operating of the system. After that, it conducts a probability analysis on the state which the system located by applying supplement variable method, and establishes the model of distributed parameter system in a form of partial differential equations. Combining C0 ? semigroup theory in the functional analysis, it conducts a dynamic analysis on the established mathematical model. Using this method, it obtains the mathematical expression of the dynamic solution and the steady state solution, and proves the uniqueness, non-negativity and the asymptotic stability of the system solution. This dissertation applies the Matlab tool and uses two-step, three-step Simpson integral equation to imitate the condition of system solution. Then, it adds possible mode of failure and the optimization adjustment state to the system, based on which it has established the distributed parameter system model which is described by partial differential system of equations. Combining the functional analysis C0 ? semigroup theory, it studies the established mathematical model, and obtains the mathematical expression of the dynamic solution system and the steady state solution. It has proven the existing of uniqueness of the system solution, the asymptotic stability of system solution and the system solution. In addition, it has lying the theory rationale for further analysis and the research on the optimization of system.

本文首先简要综述了供应链理论、可靠性研究、鲁棒性研究以及供应链鲁棒性研究的现状;然后,将供应链系统作为一个复杂系统来分析,确定了系统运行过程中所经历的状态,通过引入补充变量的方法,建立了用偏微分方程组描述的分布参数系统模型,用泛函分析中的C_0 -半群理论得到了系统动态解和稳态解的数学表达式,证明了系统解存在的唯一性、非负性和指数阶渐近稳定性;并借助Matlab工具,利用二阶、三阶辛普森积分方程模拟系统解的性态,并给出系统动态解的仿真图;本文又对上述系统增加了系统可能失效状态和优化调整状态,并在此基础上建立了用偏微分方程组描述的分布参数系统模型,同样用泛函分析中的C_0 -半群理论对所建立的数学模型进行了研究,得到系统动态解和稳态解的数学表达式,证明了系统动态解存在的唯一性、非负性及渐近稳定性,为进一步分析和研究供应链优化奠定了理论基础。

The uniqueness problems of meromorphic functions involving multiple values have been discussed with Nevanlinna theory and a series of unicity theorems have been derived in the this paper.

用Nevanlinna理论对涉及重值时的亚纯函数唯一性问题进行了讨论,并得出了一系列唯一性定理,其中有些定理是对Nevanlinna R,仪洪勋,杨力,Ozawa M等人的几个定理的推广。

In fact, this thesis contains the following results: We generalize a unicity condition of three meromorphic functions given by Jank and Terglane in class A to the case of arbitrary q meromorphic functoins.

在这篇论文里,我们利用值分布的理论来探讨半纯函数的共值与唯一性的问题,本文包含了以下的结果:将Jank与Terglane有关三个A类中的半纯函数唯一性的结果推广到任意q个半纯函数的情形;证明了C。

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