φ混合随机变量加权和的完全收敛性

本文研究了不同分布φ混合随机变量加权和的完全收敛性问题.利用随机变量截尾和矩不等式方法,获得了φ混合随机变量加权和的完全收敛性和强大数定律的结果,所获得结果推广和改进了有关独立同分布随机变量序列的相应结果.     

φ混合随机变量加权和的完全收敛性(英文)

本文研究了不同分布φ混合随机变量加权和的完全收敛性问题.利用随机变量截尾和矩不等式方法,获得了φ混合随机变量加权和的完全收敛性和强大数定律的结果,所获得结果推广和改进了有关独立同分布随机变量序列的相应结果.     

不同分布(p)混合序列的完全收敛性

讨论了一类比较广泛的相依随机变量序列(p)混合序列的收敛性质,推广了吴群英等人关于(p)混合序列的完全收敛性的研究,获得了不同分布p混合序列的完全收敛性的结果.     

φ-混合序列加权和的完全收敛性

该文把Chen和Sung (文献[1])的一个关于同分布NA随机变量序列加权和最大值完全收敛性结果推广到了φ-混合随机变量序列情形.由于已有文献所用的工具本质上是部分和最大值指数型概率不等式,而对于φ-混合随机变量序列而言,没有那么好的指数型不等式,因此原有的证明方法已失效.该文将应用φ-混合随机变量序列部分和最大值的2-阶Marcinkiewicz-Zygmund矩不等式,结合再截尾方法,获得了理想的结果.该文的证明方法不同于已有结果的证明方法.     

φ-混合序列加权和的矩完全收敛性

本文研究了φ-混合序列加权和的矩完全收敛性.利用矩不等式和截尾的方法,获得了φ-混合序列加权和的矩完全收敛性的充分条件.所得结果推广了Ahmed等(2002)及陈平炎和王定成(2010)的结论.     

φ^~混合随机变量列的几乎处处收敛性

本文研究(~φ)混合随机变量列的几乎处处收敛性,获得了(~φ)混合随机变量列的强大数律,推广和改进了独立情形的相应结果.     

?混合序列加权和的强极限收敛定理北大核心CSCD

利用?混合序列的矩不等式和随机变量截尾的方法,研究了不同分布?混合序列加权和完全矩收敛和完全收敛等性质,得到了其加权和情形下的强极限收敛定理.所获主要结果推广和改进了葛梅梅等人(高校应用数学学报,2013,28(4):424-430)关于?混合序列加权和强收敛性的相应结论.     

两两独立序列加权和的L~r收敛性

讨论了两两独立随机变量列加权和在满足r(1≤r<2)阶Ces`aro一致可积条件下的Lr收敛性,获得了与独立情形一致的结果.用相似的方法,对于其它相依或混合序列(如两两NQD列,φ-混合序列,ρ-混合序列)也有相同的结果.     

锁定固定治疗老年肱骨髁间骨折31例分析

利用截尾的方法和负相关(ND)随机变量的矩不等式,研究ND随机变量序列加权和的完全收敛性,结果,我们把独立同分布随机变量序列的完全收敛性定理推广到了ND序列情形下成立.     

SOME CONVERGENCE PROPERTIES FOR THE PARTIAL SUMS OF (ρ～) MIXING SEQUENCES

本文研究了(ρ～)混合序列部分和的若干收敛性质.利用Serfling不等式推广情形,证明了一类随机变量序列部分和的一个收敛性结果,获得了(ρ～)混合序列部分和的收敛性,并进一步得到了(ρ～)混合序列加权和的强收敛性和完全收敛性,推广并改进了文[2]中有关结果.     

Two Convergence Problems for Monotone Sequences

Eight measures of rate of convergence of monotone sequences of real numbers have been proposed and discussed in a paper by Beyer, Ebanks, and Qualls (Acta Appl. Math. 20 (1990), 267–284). These rates arose in discussions of dynamical systems. In the comparisons of these rates, two problems remained. A complete answer is given to one of the problems and a partial answer is given to the other problem.     

非线性互补问题的SQP方法

In this paper, the nonlinear complementarity problem is transformed into the least squares problem with nonnegative constraints ,and a SQP algorithm for this reformulation based on a damped Gauss-Newton type method is presented. It is shown that the algorithm is globally and locally superlinearly (quadratically) convergent without the assumption of monotonicity.     

Characterisation of compactness through convergence in Tychonoff spaces

In this article we first give a characterisation of compact spaces among spaces by improving a theorem of J. Ewert. Then, with the aid of a new type of convergence, we give a characterisation of the pseudocompact and of the Lindelöf spaces.

     

Pointwise versus equal (quasi-normal) convergence via ideals

We prove a characterization showing when the ideal pointwise convergence does not imply the ideal equal (aka quasi-normal) convergence. The characterization is expressed in terms of a cardinal coefficient related to the bounding number b$\mathfrak{b}$. We also prove a characterization showing when the ideal equal limit is unique.     

Further arguments for slice convergence in nonreflexive spaces

It is shown that no notion of set convergence at least as strong as Wijsman convergence but not as strong as slice convergence can be preserved in superspaces. We also show that such intermediate notions of convergence do not always admit representations analogous to those given by Attouch and Beer for slice convergence, and provide a valid reformulation. Some connections between bornologies and the relationships between certain gap convergences for nonconvex sets are also observed.Research supported in part by an NSERC research grant and by the Shrum endowment.NSERC postdoctoral fellow.     

A Completion of \mathbb{Z} is a Field

We define various ring sequential convergences on and . We describe their properties and properties of their convergence completions. In particular, we define a convergence on by means of a nonprincipal ultrafilter on the positive prime numbers such that the underlying set of the completion is the ultraproduct of the prime finite fields Further, we show that is sequentially precompact but fails to be strongly sequentially precompact; this solves a problem posed by D. Dikranjan.     

Lacunary equi-statistical convergence of positive linear operators

In this paper, the concept of lacunary equi-statistical convergence is introduced and it is shown that lacunary equi-statistical convergence lies between lacunary statistical pointwise and lacunary statistical uniform convergence. Inclusion relations between equi-statistical and lacunary equi-statistical convergence are investigated and it is proved that, under some conditions, lacunary equi-statistical convergence and equi-statistical convergence are equivalent to each other. A Korovkin type approximation theorem via lacunary equi-statistical convergence is proved. Moreover it is shown that our Korovkin type approximation theorem is a non-trivial extension of some well-known Korovkin type approximation theorems. Finally the rates of lacunary equi-statistical convergence by the help of modulus of continuity of positive linear operators are studied.      

赋范空间有界序列收敛的等价性

Two kinds of convergent sequences on the real vector space m of all bounded sequences in a real normed space X were discussed in this paper, and we prove that they are equivalent, which improved the results of [1].     

The convergence space of minimal USCO mappings

A convergence structure generalizing the order convergence structure on the set of Hausdorff continuous interval functions is defined on the set of minimal usco maps. The properties of the obtained convergence space are investigated and essential links with the pointwise convergence and the order convergence are revealed. The convergence structure can be extended to a uniform convergence structure so that the convergence space is complete. The important issue of the denseness of the subset of all continuous functions is also addressed.      

交错级数敛散性的微分形式判别法

给出交错级数敛散性微分形式的判别法,应用此判别法可直接判别交错级数是否收敛,以及收敛时是绝对收敛还是条件收敛.