N-B级数的Fejer和的渐近公式(英文)

设ｆ（ｚ）是单位圆周Г上的有界变差函数,且它的两个单侧导数在点ｚ0∈Г存在,本文给出它的Ｎ－Ｂ级数的Ｆｅｊｅｒ和在ｚ０处的渐近公式．     

ASYMPTOTIC NORMALITY OF THE NONPARAMETRIC KERNEL ESTIMATION OF THE CONDITIONAL HAZARD FUNCTION FOR LEFT-TRUNCATED AND DEPENDENT DATA

Under some mild conditions, we derive the asymptotic normality of the Nadaraya-Watson and local linear estimators of the conditional hazard function for left-truncated and dependent data. The estimators were proposed by Liang and Ould-Sa?d [1]. The results confirm the guess in Liang and Ould-Sa?d [1].     

AN INEQUALITY OF HOMOGENEOUS EXPANSION FOR BIHOLOMORPHIC QUASI-CONVEX MAPPINGS ON THE UNIT POLYDISK AND ITS APPLICATION

In this article,the authors obtain an inequality of homogeneous expansion for f,where f is a quasi-convex mapping(including quasi-convex mapping of type A and quasi-convex mapping of type B)defined on the open unit polydisk in C n .Meanwhile,the authors also investigate its application.     

L－函数均值的一个渐近级数（Ⅰ）

本文利用解析方法给出了ＤｉｒｉｃｈｌｅｔＬ－函数的二次均值　的一个渐近级数，其中０＜σ１，σ２＜１，ｔ是任意实数，Ｐ是素数．     

ON AN EXTENSION OF ABEL-GONTSCHAROFF''''S EXPANSION FORMULA

We present a constructive generalization of Abel-Gontscharoff's series expansion to higher dimensions. A constructive application to a problem of multivariate interpolation is also investigated. In addition, two algorithms for constructing the basis functions of the interpolants are given.     

改进的椭圆型问题一阶渐近展开误差估计

1引言考虑下述多尺度椭圆问题:■(1)其中椭圆算子A_ε定义为A_ε=-■/(■x_i)(a_(ij)~ε■/(■x_j).(2)本文使用爱因斯坦求和约定,重复指标表示求和.系数a_(ij)~ε(x)=a_(ij)(x/ε)满足下列条件:     

一种求解跳系数椭圆标量方程的渐近展开方法的误差分析

本文研究了具有跳系数(或多尺度性质)的椭圆型PDEs问题.利用渐近展开方法,将具有多尺度性质的PDEs模型问题解耦为若干光滑系数(或单尺度性)的PDEs问题进行求解,获得了和经典线性有限元方法在.0意义下同样的误差阶,表明了该方法的有效性.     

无穷级亚纯函数及其导函数的特征函数

本文证明了如下定理：设f(x)为无穷级亚纯函数,如果∑a≠∞δ（a,f)=α（α≥1),δ（∞,f)=2-α,k∈N。则（i)T9r,f^(k)-((1-k) kα）T(r,f)(r→∞）;（ii）当δ^l)0(∞,f)=1时,T（r,f^(k)-T(r,f)(r→∞）。所得定理推广了杨连中的一个结果。     

关于整函数及其微分多项式的唯一性

本文讨论关于整函数及其微分式项式的唯一性，所得定理推广文[1],[[2]的一些结论。     

THE ASYMPTOTIC FORMULA OF THE ORTHOGONAL RATIONAL FUNCTION ON THE UNIT CIRCLE

In this paper we obtained the asymptotic formula of the orthogonal rational function on the unit circlewith respect to the weight function μ(z) with preasigned poles, which are in the exterior of the unit disk.     

EDGEWORTH EXPANSION FOR NEAREST NEIGHBOR- KERNEL ESTIMATE AND RANDOM WEIGHTING APPROXIMATION OF CONDITIONAL DENSITY

§ 1　 IntroductionThere are many discussions on the estimate of density,for example,the kernel andnearest neighbor estimates.Reference [1 ] gave the nearest neighbor-kernel estimate ofconditional density.[2 ] discussed the properties on the nearest neighbor-kernel estimateand bootstrap approximation of conditional density.[3 ] studied some asymptotical proper-ties on kernel estimate and random weighting approximation of density.In this paper,wewill discuss the properties of the nearest neighb…     

ASYMPTOTIC ERROR EXPANSION AND DEFECT CORRECTION FOR SOBOLEV AND VISCOELASTICITY TYPE EQUATIONS

1.IntroductionLetObearectangulardomain.WeareconcernedwiththeRichardsonextrapolationanddefectcorrectionofthefiniteelementapproximationstothesolutionsofthefollowingsimpleSobolevtypeequationandviscoelasticitytypeequationTheextrapolationtechniqueusedforthefin…     

二维Fredholm积分方程Nystrom方法的渐近展开及其外推

本文讨论了求解二维第二类Ｆｒｅｄｈｏｌｍ积分方程的Ｎｙｓｔｒｏｍ方法，得到了数值解的逐项渐近展开，从而可进行Ｒｉｃｈａｒｄｓｏｎ外推，提高数值解的精度。     

二元多项式函数的一个定理及其应用

本文研究了二元多项式函数的插值问题.利用二元函数Langrange插值理论得到了一组关于二元多项式函数的等式,推广了一元多项式函数差商的相关结果.     

二维非线性Volterra积分方程数值解的渐近展开及其外推

本文讨论了求解二维非线性Ｖｏｌｔｅｒｒａ积分方程的Ｎｙｓｔｒｏｍ方法，得到了数值解的逐项渐近展开。从而可进行Ｒｉｃｈａｒｄｓｏｎ外推，提高数值解的精度。     

Koch曲线的级数展开式

本文给出Koch曲线的级数展开式，利用这一展开式证明了Koch曲线满足指数为α=log3/log4的Hoelder条件和处处不可微。     

二维Volterra积分方程数值解的渐近展开及其外推

本文讨论了求解二维Ｖｏｌｔｅｒｒａ积分方程的Ｎｙｓｔｒｏｍ方法，得到了数值解的逐项渐近展开，从而可进行Ｒｉｃｈａｒｄｓｏｎ外推，提高数值解的精度。