含控制参数的抽象动力方程连值问题之积分算子求解法

讨论一类抽象Volterra型积分算子,利用此获得含控制参数的抽象动力方程边值问题的解。这种新的求解法我们称为积分算子求解法。     

齐型空间上的一类积分算子

在齐型空间上讨论由分数次积分算子、奇异积分算子及BMO函数所构成的几类Toeplitz型算子的有界性.     

一类奇异积分算子的Hp有界性

利用H^p乘子理论及奇异积分算子理论研究一类奇异积分算子的H^p有界性，并且证明了当n充分大时，利用奇异积分算子理论所得结果要好一些．     

含第一类临界参数抽象动力方程边值问题之积分算子求解法

该文讨论了一类抽象Volterra型积分算子，利用此获得了含第一类临界参数的抽象动力方程边值问题的解。这种新的求解法我们称为积分算子求解法。     

仿Fourier积分算子

本文通过对具奇位相的Fourier积分算子(1)的研究引入仿Fourier积分算子的概念;并且还给出了这种算子的基本性质。关于它的应用将在另外文章中研究。     

局部紧Vilenkin群上弱Morrey-Herz空间中一些算子的有界性

首先引入了一个新空间—局部紧Vilenkin群G上弱齐次Morrey-Herz空间WMK_(p,q)~(α,λ)(G),然后在WMK_(p,q)~(α,λ)(G)上讨论了一些奇异积分算子和分数次奇异积分算子的有界性问题.     

Markov积分算子半群的限制及关于增加积分算子半群的生成

证明了转移函数是l∞的一个子空C^1上的正的压缩C0半群，其极小生成元恰好是Markov积分算子半群的生成元在C^1中的部分；Markov积分算子半群的生成元稠定的充分必要条件是q-矩阵Q一致有界；同时转移函数是Feller—Reuter—Riley的充要条件是Markov积分算子半群的生成元在Cn中的部分产生一个强连续半群．最后，在序Banach空间给出了增加的压缩积分算子半群的生成定理．     

具Dini条件奇异积分算子的加权赋范不等式

目前对奇异积分算子的研究基本上都要求核满足标准型条件,现把标准型条件减弱成Dini条件,证明了核满足Dini条件的奇异积分算子关于任意权函数的几个加权赋范不等式,扩大了奇异积分算子的研究范围.     

混合勒贝格空间上双参数奇异积分算子的端点弱估计（英文）

本文研究了混合勒贝格空间上双参数奇异积分算子的有界性.利用双参数奇异积分算子在勒贝格空间的有界性和一个向量值延拓理论.获得了双参数奇异积分算子在混合勒贝格空间上的端点弱估计和强型估计.并给出了乘积空间上非卷积型奇异积分算子的一个应用.这些结果将文献[3]中的结论推广到混合范数情形.     

广义算子半群的PERRON问题

借助于广义算子半群和广义积分算子半群的关系,讨论广义算子半群的Perron型指数稳定性,研究了广义积分算子半群的渐近行为.     

Boundedness and compactness of Volterra type integral operators

We introduce some nested classes of Volterra type integral operators. For the operators of these classes we establish criteria for boundedness and compactness in Lebesgue spaces.     

与分数次积分和具有非光滑的奇异积分算子相关的Toeplitz型算子在Morrey空间的有界性

本文证明了与分数次积分和具有非光滑的奇异积分算子相关的Toeplitz型算子的sharp极大函数估计,做为应用,得到了该算子在Morrey空间的有界性.     

Some properties of singular integral operators over an open curve Dedicated to the 85th birthday of Prof. Lu Jianke

In this paper, the stability properties, the endpoint behavior and the invertible relations of Cauchy-type singular integral operators over an open curve are discussed. If the endpoints of the curve are not special, this type of operators are proved to be stable. At the endpoints, either the singularity or smoothness of the operators are exactly described. And the function sets or spaces on which the operators are invertible as well as the corresponding inverted operators are given. Meanwhile, some applications for the solution of Cauchy-type singular integral equations are illustrated.     

Some properties of singular integral operators over an open curve Dedicated to the 85th birthday of Prof.Lu Jinake

In this paper, the stability properties, the endpoint behavior and the invertible relations of Cauchy-type singular integral operators over an open curve are discussed. If the endpoints of the curve are not special, this type of operators are proved to be stable. At the endpoints, either the singularity or smoothness of the operators are exactly described. And the function sets or spaces on which the operators are invertible as well as the corresponding inverted operators are given. Meanwhile, some applications for the solution of Cauchy-type singular integral equations are illustrated.     

One Criterion for Nuclearity of Linear Operators

We prove a criterion for nuclearity of a linear operator and establish the form of the greatest two-sided ideal of the set of all compact Akhiezer integral operators in L₂ and the set of all Akhiezer integral operators in L₂.     

A Cotlar type inequality for the multilinear singular integral operators and its applications

A Cotlar type inequality is established for the multilinear singular integral operators. As applications, some two-weight norm inequalities are obtained for the maximal operator corresponding to the multilinear singular integral operators.     

一类奇异积分算子在加权空间的界的估计

设T是由Grubb和Moore引入的一类奇异积分算子,它的核满足一种新型利普希茨正则性.T^*是由T确定的极大奇异积分算子.本文通过建立与T和T^*相关的grand极大算子的弱型端点估计,得到了算子T和T^*在加权空间的由A_p权常数表示的界的估计和弱型端点估计.     

Some properties of singular integral operators over an open curve

In this paper, the stability properties, the endpoint behavior and the invertible relations of Cauchy-type singular integral operators over an open curve are discussed. If the endpoints of the curve are not special, this type of operators are proved to be stable. At the endpoints, either the singularity or smoothness of the operators are exactly described. And the function sets or spaces on which the operators are invertible as well as the corresponding inverted operators are given. Meanwhile, some applications for the solution of Cauchy-type singular integral equations are illustrated. This work was partially supported by the National Natural Science Foundation of China (Grant No. 10471048)     

多线性分数次积分迭代型交换子的加权不等式

研究了多线性分数次积分算子的迭代型交换子,给出了双权强型不等式的充分条件,即Fefferman -Phong型条件.对此迭代型交换子,还给出了Fefferman-Stein型加权不等式和Coifman型加权不等式.     

Integral operators of Urysohn-Stieltjes type

Summary We investigate some properties of nonlinear integral operators of Urysohn--Stieltjes type with kernels depending on two variables. Results concerning the continuity and compactness of these operators are obtained. The solvability of nonlinear Urysohn--Stieltjes integral equations is also studied.