两两NQD列的收敛性质

本文首先给出两两 ＮＱＤ列的 Ｋｏｌｍｏｇｏｒｏｖ型不等式，进而讨论两两 ＮＱＤ列的收敛性质，获得了与独立情形一样的Ｂａｕｍ和Ｋａｔｚ完全收敛定理，几乎达到独立惰形著名的Ｍａｒｃｉｎｋｉｅｗｉｃｚ强大数定律、三级数定理等结果．     

两两NQD列的一个强大数定律

本文研究了一类广泛的随机变量序列两两NQD列的收敛性质，推广了与独立情形相类似的一些强大数定律，得到了新的结果．     

关于PA列部分和与乘积和的Marcinkiewicz型强大数律

Birkel(1989)d在方差存在的条件下，证明了不同分布PA列部分和的Kolmogorov型强大数律.本文取消了方差存在的限制，在合理的矩条件下证明了更一般的不同分布PA列部分和与乘积和的Marcinkiewicz型强大数律，从而能将独立列的相应结果作为自己的特况．     

可列非齐次马氏链泛函的一类强大数定律

本文用分析方法研究可列非齐次马氏链的泛函的极限性质，得到了一类不同形式的强大数定律，在其中通常形式的强大数定律中的数学期望被条件期望所代替，关于独立随机变量序列的若干经典强大数定律是本文结果的推论．     

独立随机变量和的强稳定性

独立随机变量和的强稳定性王启应（南京大学数学系，２１０００８）国家自然科学基金资助的课题．１９９１年１２月１４日收到．设为ｉ．ｉ．ｄ．的随机变量序列为两列常数．若，则称序列Ｓｎ关于是强稳定的．众所周知，对不同的常数列的强稳定性研究已取得了极为丰富的成...     

E─值独立随机变量部分和的大偏差及应用

本文给出了Ｅ－值随机变量之部分和的大偏差定理（Ｅ是一类局部凸空间）．作为其应用，解决了独立弱收敛随机变量列的经验分布的大偏差问题，从而推广了Ｄｏｎｓｋｅｒ－Ｖａｒａｄｈａｎ的结果。     

同分布两两NQD列的最大值不等式及其应用

设{xn，n≥1}是同分布的两两NQD列，记Sn=∑i=1Xi^n．本文讨论了max ｜Si｜/i（n≥1）的分布函数的上下界．作为应用，获得了随机变量supn≥｜Sn｜/n型的1阶矩及p（〉1）阶矩分别存在有限的充分必要条件，这是一个与独立同分布场合相一致的结果．     

关于任意随机变量序列的一类强极限定理

本文的目的是建立一类任意随机变量序列的强极限定理，作为推论，得到了一类鞅差序列收敛定理，马氏过程的强极限定理和若干经典的独立随机变量序列的强大数定律，已有的若干轶差序列收敛定理和可列非齐次马氏链的一个强极限定理是本文结果的特例，本文的主要结果对随机变量序列除矩条件外没有任何要求．     

关于不同分布两两NQD列的Jamison型加权乘积和的强稳定性

本文讨论了不同分布两两ＮＱＤ列的Ｊａｍｉｓｏｎ型加权乘积和的强稳定性及乘积和的Ｍａｒｃｉｎｋｉｅｗｉｃｚ型强大数律,推广并改进了Ｅｔｅｍａｄｉ［１］关于不同分布两两独立列部分和的工作及Ｍａｔｕｌａ［２］,王岳宝等［３］关于同分布两两ＮＱＤ列部分和的工作．     

关于两两NQD列的若干极限性质

本文讨论了两两ＮＱＤ列的Ｍａｒｃｉｎｋｉｅｗｉｃｚ型弱大数律及Ｊａｍｉｓｏｎ型加权和的强稳定性，指出了两两ＮＱＤ列与独立列的一个本质性区别，从而提出了解决两两ＮＱＤ旬几乎处处收敛和完全收敛的一种方式。     

On the Seneta Sequences

In this paper, we prove some properties of the Seneta sequences and functions, and in particular we prove a representation theorem in the Karamata sense for the sequences from the Seneta class SOc.     

New special function recurrences giving new indefinite integrals

Sequences of new recurrence relations are presented for Bessel functions, parabolic cylinder functions and associated Legendre functions. The sequences correspond to values of an integer variable r and are generalizations of each conventional recurrence relation, which correspond to r=1. The sequences can be extended indefinitely, though the relations become progressively more intricate as r increases. These relations all have the form of a first-order linear inhomogeneous differential equation, which can be solved by an integrating factor. This gives a very general indefinite integral for each recurrence. The method can be applied to other special functions which have conventional recurrence relations. All results have been checked numerically using Mathematica.     

Interlacing of positive real zeros of Bessel functions

We unify the three distinct inequality sequences (Abramowitz and Stegun (1972) [1, 9.5.2]) of positive real zeros of Bessel functions into a single one.     

Covering Sequences of Boolean Functions and Their Cryptographic Significance

We introduce the notion of covering sequence of a Boolean function, related to the derivatives of the function. We give complete characterizations of balancedness, correlation immunity and resiliency of Boolean functions by means of their covering sequences. By considering particular covering sequences, we define subclasses of (correlation-immune) resilient functions. We derive upper bounds on their algebraic degrees and on their nonlinearities. We give constructions of resilient functions belonging to these classes. We show that they achieve the best known trade-off between order of resiliency, nonlinearity and algebraic degree.     

F_2+vF_2上生成M序列的非奇异反馈函数的性质

M序列是一类最长的非线性伪随机序列.本文研究了在F2+vF2上生成M序列的非奇异反馈函数f(x1,x2,…,xn)所具有的3条性质:1)Rf≠f;2)Djf为互不相同的生成M序列的非奇异反馈函数(j=1,v,1+v);3)在f的多项式表达式中,常数项j0一定不为0;若线性项x2,x3,…,xn全出现,则它们的系数不能全为1或j0.     

F2＋vF2上生成M序列的非奇异反馈函数的性质

M序列是一类最长的非线性伪随机序列．本文研究了在F2＋vF2上生成M序列的非奇异反馈函数f（x1，X2，…，xn）所具有的3条性质：1）Rf≠f；2）Djf为互不相同的生成M序列的非奇异反馈函数（j=1，v，1＋v）；3）在f的多项式表达式中，常数项j。一定不为0；若线性项x2，x3，…，xn全出现，则它们的系数不能全为1或j。     

Approximation of semigroups and cosine functions in spaces of periodic functions

In this article we furnish a representation of the solutions of some classes of first-order and second-order evolution problems as limit of iterates of classical sequences of approximating operators. The method is based on Trotter's theorem on the approximation of semigroups which is applied here also for the approximation of groups and cosine functions. We apply this method in spaces of continuous periodic functions and using some classical sequences of trigonometric polynomials.     

Korovkin-type approximation in spaces of vector-valued and set-valued functions

We consider some Korovkin-type approximation results for sequences of linear continuous operators in spaces of vector-valued and set-valued continuous functions without assuming the existence of the limit operator. Even in spaces of real continuous functions, where similar results have already been established, we replace the positivity assumption with a weaker condition. We also give some quantitative estimate of the convergence and some applications where previous results cannot be applied.     

Tauberian theorems for weak almost convergent functions

The almost convergent function which was introduced by Raimi [6] and discussed by Ho [4], Das and Nanda [2, 3], is the continuous analogue of almost convergent sequences (see [5]). In this paper, we establish the Tauberian conditions and the Cauchy criteria for weak almost convergent functions on R~2+ .     

Path-based distance functions in n-dimensional generalizations of the face- and body-centered cubic grids

Path-based distance functions are defined on n-dimensional generalizations of the face-centered cubic and body-centered cubic grids. The distance functions use both weights and neighborhood sequences. These distances share many properties with traditional path-based distance functions, such as the city-block distance, but are less rotational dependent. For the three-dimensional case, we introduce four different error functions which are used to find the optimal weights and neighborhood sequences that can be used to define the distance functions with low rotational dependency.