THE BOUNDEDNESS OF MULTILINEAR COMMUTATORS ON WEIGHTED SPACES AND HERZ-TYPE SPACES

The boundedness of maximal multilinear commutator on certain weighted spaces is obtained. The boundedness of mulitilinear commutators of singular integrals with Calderon-Zygmund kernel on Herz-type spaces is also considered.     

齐型空间上的Toeplitz型算子

设X是齐型空间.设T_(j,1)和T_(j,2)是具有非光滑核的奇异积分算子,或者是±II(I是恒等算子).令Toeplitz型算子T_b=■T_(j,1)M_T_(j,2),其中M_bf(x)=b(x)f(x).研究了当b∈BMO(X)时,T_b(f)在加权情况下的有界性,以及当b∈BMO(X)时,与经典Carderon-Zygmund算子相联的T_b(f)在Morrey空间上的有界性.     

广义分数次积分算子在加权Herz型Hardy空间的有界性

利用加权Herz型Hardy空间的原子分解理论,讨论了广义分数次积分算子Tl从加权Lp空间到加权Lq空间,以及从加权Herz型Hardy空间到加权Herz空间的有界性问题.将已有的分数次积分算子的结论推广到广义分数次积分算子的情形.     

Characterization of the boundedness of generalized fractional integral and maximal operators on Orlicz–Morrey and weak Orlicz–Morrey spaces

We give necessary and sufficient conditions for the boundedness of generalized fractional integral and maximal operators on Orlicz–Morrey and weak Orlicz–Morrey spaces. To do this, we prove the weak–weak type modular inequality of the Hardy–Littlewood maximal operator with respect to the Young function. Orlicz–Morrey spaces contain $L^p$ spaces ($1\le p\le \infty$), Orlicz spaces, and generalized Morrey spaces as special cases. Hence, we get necessary and sufficient conditions on these function spaces as corollaries.     

A note on the boundedness of Calderón-Zygmund operators on Hardy spaces

It was well known that Calderón-Zygmund operators T are bounded on Hp for provided T^∗(1)=0. A new Hardy space , where b is a para-accretive function, was introduced in [Y. Han, M. Lee, C. Lin, Hardy spaces and the Tb-theorem, J. Geom. Anal. 14 (2004) 291-318] and the authors proved that Calderón-Zygmund operators T are bounded from the classical Hardy space Hp to the new Hardy space if T^∗(b)=0. In this note, we give a simple and direct proof of the boundedness of Calderón-Zygmund operators via the vector-valued singular integral operator theory.     

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.     

Generalized weighted Morrey spaces and classical operators

We introduce the notion of generalized weighted Morrey spaces and investigate the boundedness of some operators in these spaces, such as the Hardy–Littlewood maximal operator, generalized fractional maximal operators, generalized fractional integral operators, and singular integral operators. We also study their boundedness in the vector‐valued setting.     

多线性奇异积分在Hardy空间的有界性

通过相关的分数次积分算子的性质,证明了一类多线性算子在Hardy空间上的(Hp,Lp)有界性,得到一种简明的方法.     

变指数加权Herz-Morrey空间上的分数次积分算子交换子的有界性

本文在指数函数的正则性自然假设下,建立了变指数加权Herz-Morrey空间上分数次积分算子及其交换子的有界性.从而得到了变指数加权Herz空间上的一个结果.     

分数次Hardy算子在变指数Herz-Morrey空间中的有界性

证明了n维分数次Hardy算子H_β和H_(β^*)从变指数Herz-Morrey空间MK(_p_1,q_1(·)*)从变指数Herz-Morrey空间MK(_p_1,q_1(·)^α,λ)(Rα,λ)(Rⁿ)到MK_(p_2,q_2(·)n)到MK_(p_2,q_2(·)^α,λ)(Rα,λ)(Rⁿ)的有界性.对n维Hardy算子也建立了相应的结果.     

On the Similarity between Volterra Operators and Transformation Operators for Integro-Differential Operators of Fractional Order

We establish the similarity between certain Volterra integral operators and the Riemann--Liouville fractional integration operator as well as the existence of a triangular transformation operator for integro-differential equations of fractional order. The results obtained are consistent with similar results for the case of integer order.     

Boundedness of commutators of generalized fractional integral operators on weighted herz-type hardy spaces

In this paper, we study the boundedness of higher order commutators of generalized fractional integral operators on weighted Lp spaces and Herz-type Hardy spaces.     

Lp (ℝn ) boundedness for higher commutators of singular integrals with rough kernels belonging to certain block spaces

In this paper, we prove the L^p (?ⁿ ) boundedness for higher commutators of singular integrals with rough kernels belonging to certain block spaces provided that 1 < p < ∞ (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

On the boundedness of classical operators on weighted lorentz spaces

Conditions on weightsu(·),v(·) are given so that a classical operatorT sends the weighted Lorentz spaceL ^Lrs (vdx) intoL ^pq (udx). HereT is either a fractional maximal operatorM _α or a fractional integral operatorI _α or a Calderón-Zygmund operator. A characterization of this boundedness is obtained forM _α andI _α when the weights have some usual properties and max(r, s) ≤ min(p, q).     

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.     

分数次积分算子在Vilenkin群Morrey空间上的有界性质

引入了Vilenkin群上弱Morrey空间的概念,得到了分数次积分算子在Vilenkin群Morrey空间上的有界性质,特别地,我们给出了在端点处的弱型估计.     

非齐型空间上分数型Marcinkiewicz积分算子的加权估计

令（X,d,μ）为满足所谓上倍双倍条件和几何双倍条件的度量测度空间.设M_β,ρ,q为（X,d,μ）上的分数型Marcinkiewicz积分算子.在本文中,作者证明了若β ∈[0,∞）,ρ ∈（0,∞）,q ∈（1,∞）且M_β,ρ,q在L²（μ）上有界,则M_β,ρ,q是从加权Lebesgue空间L^p（w）到加权弱Lebesgue空间L^p,∞（w）上有界和从加权Morrey空间L^p,κ,η（ω）到加权弱Morrey空间WL^p,κ,η（ω）上有界.     

齐次~Morrey-Herz 空间上分数次积分算子高阶交换子的有界性

在齐次Morrey-Herz空间上建立了高阶交换子~$T^{m}_{b,l}$ 和 ~$M^{m}_{b,l}$的有界性，其中~$T^{m}_{b,l}$ 和 ~$M^{m}_{b,l}$ 是由分数次积分算子和分数次极大算子分别与~BMO($R^{n}$)函数生成的高阶交换子.     

On the Sobolev boundedness results of the product of pseudo-differential operators involving a couple of fractional Hankel transforms

This article is concerned with the study of pseudo-differential operators associated with fractional Hankel transform. The product of two fractional pseudo-differential operators is defined and investigated its basic properties on some function space. It is shown that the pseudo-differential operators and their products are bounded in Sobolev type spaces. Particular cases are discussed.