对角占优矩阵直积的一些性质

给出了对角占优矩阵直积的一些对角占优性质以及∞-范数估计式.     

有广义对角占优系数矩阵的齐次线性方程组

引言与定义 本文限于考虑无零行零列的n×n,（n>2）复矩阵，我们采用以下记号：N={1，2，…，n}；R_i=sum from j∈N-（i）│a_(ij)│;C_i=sum from j∈N-（i）│a_(ij)│;S_i(a)=R_i~HC_i~(1-a),j∈N,a∈[0.1];A∈Z，表示A有全部非正的非对角元的n×n实方阵。     

On the incentive properties of multi-item auctions

In a market of indivisible objects where a buyer consumes at most one object, the buyer-optimal auction is a multi-item generalization of Vickrey's second-price auction. If the optimal auction is formulated as a strategic game, it is well-known that it satisfies good incentive properties, i.e., the honest strategy profile is a Nash equilibrium, a unique perfect equilibrium and a dominant strategy equilibrium. For each of the three incentive properties, it is shown that the optimal auction is aunique auction satisfying the property. The uniqueness results are derived in a general setting with budget constraints and non-linear utilities.I would like to thank three anonymous referees for detailed comments and constructive suggestions. I would also like to thank Edward J. Green and John G. Riley for their valuable comments and advice on earlier drafts of this paper. I am solely responsible for any errors.     

H-矩阵的实用判定及谱分布

1引言及记号因为非奇异H-矩阵主对角元非零,所以本文总假定所涉及矩阵主对角元非零,并且设A=(aij)∈Cn×n为n阶复方阵,N={1,2,…,n}．记N1={i∈N |Pi(A)<|aii|Pi(A)}, N4={i∈N | |aii|≥Pi(A)>Ri(A)}, N5={i∈N | |aii|>Pi(A)=Ri(A)},N0={i∈N | |aii|≤Ri(A),|aii|≤Pi(A)},即N=N1∪N2∪N3∪N4∪N5∪N0．     

弱局部对角占优阵及其在稳定性理论中的应用

引进了弱局部地角占优阵的概念，研究了这类矩阵的性质及其特征值问题，并给出了在稳定性理论中的应用。     

H-MATRICES AND S-DOUBLY DIAGONALLY DOMINANT MATRICES

§1　IntroductionSpecial matrices,especially H-matricesand M-matrices,have very wide applications innumerical calculations,control theory,mathematical physics,optimization techniques andso on.In recenttwo orthree decades,the studies in these matrices are fruitful,and manygraceful equivalentconditions to M-matrices have been proposed.By contrast,though theH-matrices are closely related with M-matrices,researches on H-matrices show that theproblems in H-matrices are more difficultand some res…     

矩阵特征值的包含域

本文对圆盘定理进行了改进，给出了特征值分布新的估计，在此基础上得到了对角占优矩阵非奇异的一个充分条件，并且推广与改进了[1，2]中的结果。     

ON THE TRANSPORT EQUATION WITH INTEGRAL BOUNDARY CONDITIONS AND ITS CONSERVAIVE LAW

The well-posedness for the time-dependent neutron transport equationwith integral boundary conditions is established in L~1 space. Some spectral propertiesof the transport operator are discussed, the dominant eigenvalue is proved existing,and furthermore, the conservative law of migrating particle numbers is established.     

Subordination properties for meromorphic multivalent functions associated with the multiplier transformation

The purpose of the present paper is to obtain some sandwich-type theorems, which are combined by subordination and superordination preserving properties associated with a certain family of multiplier transformations for meromorphic multivalent functions in the punctured open unit disk.     

判定广义严格对角占优矩阵的一组新条件

本文给出了判定广义对角占优矩阵的一组新条件,改进了近期的一些结果,并给出相应的数值算例来说明结果的有效性.