级联算法在Besov和Triebel-Lizorkin空间上的有界性和收敛性(I)

本文通过引入级联算法的特征多项式和利用一维分解技术,完整地刻画了级联算法在Besov和Triebel-Lizorkin空间上的增量和收敛性。     

Lipschitz曲面上的Besov空间和Triebel-Lizorkin空间

利用Clifford分析工具,给出了Lipschitz曲面上Besov空间与Triebel-Lizorkin空间定义,并研究其特征刻划．     

区域上Besov空间的原子分解和限制定理

本文在区域Ω（Ω 　 Ｒｎ，ｎ≥１）上定义了某类在边界上消失的Ｂｅｓｏｖ空 间Ｂ~（ｓ，ｑ）_（ｐ，ｏ）（Ω）（ｓ∈Ｒ，０＜ｐ，ｑ≤∞），并给出了它的原子分解，然后证明了当区域Ω∈ Ｄε（ｎ）（０＜ε≤１，ｐｓ＜ε）时，得到了限制定理Ｂ~（ｓ，ｑ）_（ｐ，ｏ）（Ω）＝Ｂ~（ｓ，ｑ）_（ｐ）（Ω）．     

精细Besov空间

本文将Besov空间Bsp,q推广为精细Besov空间RBap q,其中s∈R,而α∈Rk+1,k为非负整数.给出了精细Besov空间的等价拟范数和嵌入定理.同时证明了在Bsp,q和∪ B;,q之间还存在无t＞s穷多个精细Besov空间作为真子空间.     

精细Besov空间

本文将Ｂｅｓｏｖ空间Ｂ＿Ｐ～Ｓ，ｑ推广为精细Ｂｅｓｏｖ空间ＲＢ＿Ｐ～ａ，ｑ，其中ｓ∈Ｒ，而ａ∈Ｒ～（ｋ＋１），ｋ为非负整数．给出了精细Ｂｅｓｏｖ空间的等价拟范数和嵌入定理．同时证明了在Ｂ＿Ｐ～Ｓ，ｑ和 ＵＢ＿ｐ～ｔ，ｑ之间还存在无穷多个精细Ｂｅｓｏｖ空间作为真子空间．     

奇异积分算子在乘积Triebel—Lizorkin空间

本文讨论了一类粗糙的奇异积分算子在乘积Triebel—Lizorkin空间中的有界性,以及分数次积分算子和Littlewood—Paley函数在此空间的有界性,改进和推广了以前的结果．     

Besov 空间上的算子插值定理

本文研究了算子的插值问题.利用Riesz-Thorin定理的证明方法,并运用Daubechies小波得到了Besov空间上的线性算子的插值定理.     

局部域上的Besov空间和Herz空间

给出了局部域上的Besov空间和Herz空间的关系 ,并得到一乘子定理 ,然后建立了加权Besov空间的原子分解刻画 .     

区域上Triebel-Lizorkin空间的原子分解与限制定理

本文在区域Ω( Rn,n≥1)上定义了某类在边界上消失的Triebel-Lizorkin空间 ,并给出了它的原子分解定理,对偶定理.同时证明了当区域 时,得到了限制和扩张定理     

区域上Triebel-Lizorkin空间的原子分解与限制定理

本文在区域Ω(∪ Rn,n≥1)上定义了某类在边界上消失的Triebel-Lizorkin空间F8,9p,o(Ω),并给出了它的原子分解定理,对偶定理.同时证明了当区域Ω∈D∈∩ERn)(0＜∈＜1)时,得到了限制和扩张定理F8,9p,o(Ω)=F8,9p(Ω)(0＜p,q＜∞,s∈R,ps＜∈).     

Wavelets and Geometric Structure for Function Spaces

Abstract With Littlewood–Paley analysis, Peetre and Triebel classified, systematically, almost all the usual function spaces into two classes of spaces: Besov spaces and Triebel–Lizorkin spaces ; but the structure of dual spaces of is very different from that of Besov spaces or that of Triebel–Lizorkin spaces, and their structure cannot be analysed easily in the Littlewood–Paley analysis. Our main goal is to characterize in tent spaces with wavelets. By the way, some applications are given: (i) Triebel–Lizorkin spaces for p = ∞ defined by Littlewood–Paley analysis cannot serve as the dual spaces of Triebel–Lizorkin spaces for p = 1; (ii) Some inclusion relations among these above spaces and some relations among and L ¹ are studied. Supported by NNSF of China (Grant No. 10001027)     

Characterization of Function Spaces Using Wavelets

It is well known that we can use wavelets to characterize various function spaces, for example, Lebesgue, Sobolev, and Besov spaces, and get equivalent norms with wavelet coefficients. However, we cannot determine whether a function is in these spaces by looking only at the wavelet coefficients since the constant function is orthogonal to all wavelets. In this paper, we close the gap by investigating the convergence of wavelet series.     

加权Orlicz-Lorentz鞅空间的原子分解及其应用

本文研究加权Orlicz-Lorentz鞅空间的原子分解理论.利用原子分解方法,获得了加权Orlicz-Lorentz鞅空间的内插理论以及鞅变换算子的有界性证明.上述结果推广了Orlicz和Lorentz鞅空间理论相关结果.     

Characterization of Multiplier Spaces with Daubechies Wavelets

We characterize the multiplier spaces from Sobolev spaces to L² with Daubechies wavelets without using capacity.     

Banach空间值弱Garsia型鞅空间及其原子分解

定义了Banach空间值弱Garsia型鞅空间和三种类型原子,证明了Banach空间值弱Garsia型鞅空间上的四个原子分解定理,并利用这些定理,得到Banach空间值弱Garsia型鞅空间的互相嵌入关系,其结果与Banach空间的凸性和光滑性有密切关系.     

New abstract Hardy spaces

The aim of this paper is to propose an abstract construction of spaces which keep the main properties of the (already known) Hardy spaces H¹. We construct spaces through an atomic (or molecular) decomposition. We prove some results about continuity from these spaces into L¹ and some results about interpolation between these spaces and the Lebesgue spaces. We also obtain some results on weighted norm inequalities. Finally we present partial results in order to understand a characterization of the duals of Hardy spaces.     

一类函数空间的刻画

在Ｏｒｌｉｃｚ空间Ｌ_p（Ｒ^ｎ）中给出一类于空间Ｃ_p^a（Ｒ^ｎ）,利用一标准算子序列的逼近,得到 其等价刻画．     

Interpolation for Function Spaces Related to Mixed Boundary Value Problems

Interpolation theorems are proved for Sobolev spaces of functions on nonsmooth domains with vanishing trace on a part of the boundary.