关于两类积分算子的性质

设ｆ（ｚ）＝ｚ＋ａ２ｚ＾２＋…在单位圆的Ｄ内解析，β，γ，ｃ为常数，γ≠０，定义积分虎子，Ｉ１（ｆ）（ｚ）＝∫＾ｚ０（ｆ（ｔ）／ｔ）βｄｔ，Ｉ（ｆ）（ｚ）＝「γ＋ｃ／ｚ＾ｃ∫＾ｚ０ｔ＾ｃ－１（ｆ（ｔ））γｄｔ」＾１／γ。讨论了积分算子Ｉ１与Ｉ２的一些性质，改进了有关这两类积分算子的几个结果。     

闭逐块光滑流形上的Cauchy—Fantanppie型积分的边界性质

对Ｃ＾ｎ空间中具有逐块Ｃ＾（１）光滑可定向边界δＤ的有界域Ｄ和著名的Ｃａｕｃｈｙ－Ｆａｎｔａｐｐｉｅ公式，本文定义一类与Ｂｏｃｈｎｅｒ－ｍａｒｔｉｎｅｌｌｉ核同伦等价的Ｃ－Ｆ核Ω，应用同伦方法证明具有Ｈｏｌｄｅｒ密度的相应奇异积分Ｆ（ｔ）存在哥西主值和Ｃ－Ｆ型积分Ｆ（ｚ）存在满足Ｈｏｌｄｅｒ条件的内，外极限值Ｆ＾＋（ｔ）和Ｆ＾－（ｔ）；同时建立一个更一般的含有边界上点ｔ的立体角系数α（ｔ）的Ｐｌｅ     

带可变Calderon—Zygmund核的局部多线性振荡积分

本文证明了某些具有可变Ｃａｌｄｅｒｏｎ－Ｚｙｇｍｕｎｄ核和光滑位相函数的局产中多线性振荡奇异积分算子在Ｌ＾ｐ（Ｒ＾ｎ）空间上的有界性。     

锐角三角形中的一个不等式

文献［１］中得出了下述二次型三角形不等式：对锐角△ＡＢＣ与任意实数ｘ,ｙ,ｚ,有ｓ－ａａｘ２＋ｓ－ｂｂｙ２＋ｓ－ｃｃｚ２≥２（ｙｚｃｏｓＢｃｏｓＣ＋ｚｘｃｏｓＣｃｏｓＡ＋ｘｙｃｏｓＡｃｏｓＢ）①其中ａ,ｂ,ｃ与ｓ分别为三角形的三边与半周．最近,我们在...     

一类具周期系数的Riccati型方程的周期解

给出Ｒｉｃｃａｔｉ型方程ｘ＾&;#183;＝Ａ（ｔ）ｘ＾２ｍ＋Ｂ（ｔ）ｘ＾２ｋ－１＋Ｃ（ｔ）（Ａ（ｔ），Ｂ（ｔ），Ｃ（ｔ）是周期为Ｔ的连续函数，ｍ，ｋ∈Ｎ且ｍ≥ｋ）无周期解及存在周期解的充分条件。     

α-方程的C_(p,q)~(k α)-形式解及其上确界范数估计

文中研究了－－方程在拟凸域上的积分解算子的性质，得到了－－方程在具Ｃｋ（ｋ≥０）类边界的拟凸开集上的Ｃｋ＋αｐ，ｑ－形式的积分算子解及其解的上确界范数估计，它包含了文［１］仅对Ｃ∞的情形     

关于3维不可压缩Euler方程组的修正的涡块问题

本文将引进涡度空间Ｃ””，“。证明了当Ｒ３中紧超曲面０ＥＣ”－０，且ｗ０（Ｘ）Ｃ”“，ｚ。时，３维不可压缩Ｅｕｌｅｃ方程组的散度为零的初始值问题存在唯一的局部Ｌｉｐｓｃｈｉｔｚ解，且０的随时间发展以后的Ｒ３中紧超曲面，与涡度ｗ（ｔ，）分别属于Ｃ２－”与Ｃ”“，中。     

关于Poinare‘度量与Bers逼近定理

本文首先给出区域Ｄ的Ｐｏｉｎｃａｒｅ度量λ（ｚ）的几个有关性质，然后推广Ｂｅｒｓ逼近定理，得到主要结果如下：设Ｄ是连通数为有穷的有界区域，记Ａｑ（Ｄ）为Ｄ内满足‖ψ‖＝∫Ｄ「λ（ｚ）」＾２－│ψ（ｚ）‖ｄｘ∧ｄｚ＾－│〈∞的解件函烽ψ之全体构成的Ｂａｎａｃｈ空间，Ｒｑ（Ｄ，Ｔ）（Ｔ包含（Ｃ－Ｄ））表示Ａｑ（Ｄ）中极点在Ｔ的有理函数子空间，当Ｔ满足Ｂｅｒｓ逼近定理条件时，Ｒｑ（Ｄ，Ｔ）在Ａｑ（Ｄ）ｋ     

C^n中的界域上σ—方程局部解的Bochner—Ono公式

本文利用Ｏｎｏ的局部化方法及Ｘｅнкин的技巧，讨论Ｃ＾ｎ空间中有界域上σ－方程局部解的存在性，并得到有界域上σ－方程局部解的Ｂｏｃｈｎｅｒ－Ｏｎｏ公式，且指出在含参数的局部意义下有简单的一致估计。     

紧致齐性空间上的调和分析（IV）：Riesz变换与Bessel变换

本文研究了紧致齐性空间上的Ｒｉｅｓｚ位势算子与Ｂｅｓｓｅｌ位势算子，Ｒｉｅｓｚ变换与Ｂｅｓｓｅｌ变换，给出了上述算子对应的核函数的具体构造并证明了Ｒｉｅｓｚ变换与Ｂｅｓｓｅｌ变换作为奇异积分算子的Ｈ＾ｐ有界性，Ｐ＞０。     

A REPRESENTATION FORMULA RELATED TO SCHR(O)DINGER OPERATORS

Schr(o)dinger operator is a central subject in the mathematical study of quantum mechanics.Consider the Schrodinger operator H = -△ V on R, where △ = d2/dx2 and the potential function V is real valued. In Fourier analysis, it is well-known that a square integrable function admits an expansion with exponentials as eigenfunctions of -△. A natural conjecture is that an L2 function admits a similar expansion in terms of "eigenfunctions" of H, a perturbation of the Laplacian (see [7], Ch. Ⅺ and the notes), under certain condition on V.     

Qualitative Analysis of Bifurcating Solutions in the Lengyel-Epstein Model

One of the most fundamental problems in theoretical biology is to explain the mechanisms by which patterns and forms are created in the＇living world. In his seminal paper ＂The Chemical Basis of Morphogenesis＂, Turing showed that a system of coupled reaction-diffusion equations can be used to describe patterns and forms in biological systems. However, the first experimental evidence to the Turing patterns was observed by De Kepper and her associates（1990） on the CIMA reaction in an open unstirred reactor, almost 40 years after Turing＇s prediction. Lengyel and Epstein characterized this famous experiment using a system of reaction-diffusion equations. The Lengyel-Epstein model is in the form as follows     

On a class of self-similar processes with stationary increments in higher order Wiener chaoses

We study a class of self-similar processes with stationary increments belonging to higher order Wiener chaoses which are similar to Hermite processes. We obtain an almost sure wavelet-like expansion of these processes. This allows us to compute the pointwise and local Hölder regularity of sample paths and to analyse their behaviour at infinity. We also provide some results on the Hausdorff dimension of the range and graphs of multidimensional anisotropic self-similar processes with stationary increments defined by multiple Wiener–Itô integrals.     

(0,1 ;0)-INTERPOLATION ON INFINITE INTERVAL (-∞, +∞)

In this paper, we study the explicit representation and convergence of (0, 1; 0)-interpolation on infinite interval, which means to determine a polynomial of degree ≤ 3n - 2 when the function values are prescribed at two set of points namely the zeros of Hn(x) and H′n(x) and the first derivatives at the zeros of H′n(x).     

On a class of Riemann surfaces

It is considered the class of Riemann surfaces with dimT1 = 0, where T1 is a subclass of exact harmonic forms which is one of the factors in the orthogonal decomposition of the spaceΩH of harmonic forms of the surface, namely The surfaces in the class OHD and the class of planar surfaces satisfy dimT1 = 0. A.Pfluger posed the question whether there might exist other surfaces outside those two classes. Here it is shown that in the case of finite genus g, we should look for a surface S with dimT1 = 0 among the surfaces of the form Sg\K , where Sg is a closed surface of genus g and K a compact set of positive harmonic measure with perfect components and very irregular boundary.     

CONTENTS OF VOLUME 30

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Instructions for contributions

正Applied Mathematics-A Journal of Chinese Universities,Series B(Appl.Math.J.Chinese Univ.,Ser.B)is a comprehensive applied mathematics journal jointly sponsored by Zhejiang University,China Society for Industrial and Applied Mathematics,and Springer-Verlag.It is a quarterly journal with     

Journal of Mathematical Research with Applications Guide for Authors

正Journal overview:Journal of Mathematical Research with Applications(JMRA),formerly Journal of Mathematical Research and Exposition(JMRE)created in 1981,one of the transactions of China Society for Industrial and Applied Mathematics,is a home for original research papers of the highest quality in all areas of mathematics with applications.The target audience comprises:pure and applied mathematicians,graduate students in broad fields of sciences and technology,scientists and engineers interested in mathematics.     

Staircase transportation problems with superadditive rewards and cumulative capacities

A cumulative-capacitated transportation problem is studied. The supply nodes and demand nodes are each chains. Shipments from a supply node to a demand node are possible only if the pair lies in a sublattice, or equivalently, in a staircase disjoint union of rectangles, of the product of the two chains. There are (lattice) superadditive upper bounds on the cumulative flows in all leading subrectangles of each rectangle. It is shown that there is a greatest cumulative flow formed by the natural generalization of the South-West Corner Rule that respects cumulative-flow capacities; it has maximum reward when the rewards are (lattice) superadditive; it is integer if the supplies, demands and capacities are integer; and it can be calculated myopically in linear time. The result is specialized to earlier work of Hoeffding (1940), Fréchet (1951), Lorentz (1953), Hoffman (1963) and Barnes and Hoffman (1985). Applications are given to extreme constrained bivariate distributions, optimal distribution with limited one-way product substitution and, generalizing results of Derman and Klein (1958), optimal sales with age-dependent rewards and capacities.To our friend, Philip Wolfe, with admiration and affection, on the occasion of his 65th birthday.Research was supported respectively by the IBM T.J. Watson and IBM Almaden Research Centers and is a minor revision of the IBM Research Report [6].