H∞和Bergman空间之间的加权复合算子

本文研究H∞和Bergman空间之间加权复合算子uCφ的有界性或紧性,利用泛函分析及复分析的方法,获得了uCφ是有界算子或紧算子的充要条件在H∞和Bergman空间之间的范数估计,推广了各类解析函数空间上加权复合算子的相应理论.     

COMPOSITION OPERATORS BETWEEN SOME WEIGHTED HARDY SPACES

Let D be the unit disc and H(D) be the set of all analytic functions on D. In [2], C. Cowen defined a space H = f ∈ H(D) : f(z) =sum from k=o to ∞ ak(z + 1)k, z∈ D, ‖f‖2 = sum from k=o to ∞ |ak|24k < ∞In this article, the authors consider the similar Hardy spaces with arbitrary weights and discuss some properties of them. Boundedness and compactness of composition operators between such spaces are also studied.     

单位球上的加权Bergman空间上的紧复合算子

在一定条件下,证明了(?)~n中单位球上的加权Bergman空间A~p(φ)上的复合算子C_φ是紧算子的充要条件是当|z|→1~-时(1-|x|~2)/(1-|φ(z)|~2)→0.     

COMPACT COMPOSITION OPERATORS ON WEIGHTED BERGMAN SPACES ON BOUNDED SYMMETRIC DOMAINS

In this article, we borrow the idea of using Schur’s test to characterize the compactness of composition operators on the weighted Bergman spaces in a bounded symmetric domain Ω, and verify that Cφ is compact on L q a (Ω, dv β ) if and only if K ( φ ( z ) ,φ ( z )) K ( z,z ) → 0 as z →φΩ under a mild condition, where K(z, w) is the Bergman kernel.     

AN UPPER BOUND OF THE ESSENTIAL NORM OF COMPOSITION OPERATORS BETWEEN WEIGHTED BERGMAN SPACES

In this paper, we define the generalized counting functions in the higher dimensional case and give an upper bound of the essential norms of composition operators between the weighted Bergman spaces on the unit ball in terms of these counting functions. The sufficient condition for such operators to be bounded or compact is also given.     

加权Bergman空间上的Toeplitz算子和Hankel算子

西方给出了Ｃ＾ｎ中单位球上的带权的Ｂｅｒｇｍａｎ空间上具一般符号的Ｔｏｅｐｌｉｔｚ算子和Ｈａｎｋｅｌ算子为紧的充要条件。     

BOUNDED COMPOSITION OPERATORS ON HARDY SPACES (II)

In this paper, the characterization of semi-Fredholm composition operators from H2(Bm) to H2(Bn) is given. As an application of the composition operators, the extension properties of analytic maps are discussed.     

加权Bergman空间上的Carleson测度与复合算子

本文研究了复平面上单位圆盘D上具有指数型权的加权Bergman空间上的Carleson测度和复合算子。利用Carleson测度的概念分别给出了有界或紧的复合算子的充分必要条件。     

COMPOSITION OPERATORS ON BERGMAN SPACES＊＊＊

The authors obtain function theoretic characterizations of the compactness on the Standard weighted Bergman spaces of the two operators formed by multiplying a composition operator with the adjoint of another composition operator.     

Bergman空间上的加权复合算子及应用(英文)

本文研究了单位圆盘上Bergman空间上的加权复合算子和复平面的单连通域(不是全平面)上Bergman空间上的复合算子的有界性和紧性.利用复分析方法,获得了有界性与紧性的一些充分条件和必要条件,推广了Hardy空间上的若干相关结果.     

WEIGHTED COMPOSITION OPERATORS ON BERGMAN SPACE AND APPLICATIONS

本文研究了单位圆盘上 Bergman空间上的加权复合算子和复平面的单连通域(不是全平面)上Bergrnan空间上的复合算子的有界性和紧性.利用复分析方法,获得了有界性与紧性的一些充分条件和必要条件,推广了Hardy空间上的若干相关结果.     

c~n中有界强拟凸域上Bergman空间的复合算子

设D是Cn中具有光滑边界的有界强拟凸域,φ:D-D是D的全纯自映射.本文研究D上Bergman空间的复合算子Cφ,通过η-Carleson测度给出Cφ:LηPa(D)-Lηpa(D)(0相似文献   

Volterra型算子和复合算子乘积的有界性

本文研究了从上半平面的Hardy空间到Zygmund空间上的Volterra型算子和复合算子乘积的有界性问题.利用泛函分析和复分析的方法,获得了从上半平面的Hardy空间到Zygmund空间生成的Volterra型算子和复合算子的乘积有界性刻画,推广了S.Stevic关于从上半平面的Hardy空间到Zygmund空间上的复合算子有界性的结果.     

局部Hardy与Lorentz空间的关系

本文研究局部Hardy空间Hloc1(Ω)与局部Lorentz空间Lloc1,γ(Ω)(0<γ≤1)之间的关系.当0<γ≤1/2时,两者无不包含;当1/2<γ≤1时,Hloc1(Ω)中的非负函数必然属于Lloc1,γ(Ω).     

A LITTLEWOOD-PALEY TYPE THEOREM FOR BERGMAN SPACES

In this paper,we prove that the original Littlewood-Paley g-functions can be used to characterize Bergman spaces as well.     

单位多圆盘加权Bergman空间上Toeplitz算子的本质谱

本文研究了单位多圆盘加权Bergman空间AΦp(Dn)上的Toeplitz算子.利用多圆盘函数论,获得了L∞(Dn)的使得符号在其中的Toeplitz算子的半换位子是紧算子的最大自伴子代数Q,并计算了符号在Q中的Toeplitz算子的本质谱.     

单位球上Bergman空间的Cesàro算子

对一切p∈(0,∞),Cesaro算子在加权的p次Bergman空间A p(Bn)上有界,但不是紧的,其中Bn是Cn上中的单位球,而是[0,1)上的正规权函数.与Cesaro算子相联系,以解析函数g为符号的积分箅子Rg定义为本文刻画了使算子Rg在A p(Bn)上是有界(或紧)的解析函数g的特征.同时,在多圆柱上也能得出类似的结果.     

COMPACT COMPOSITION OPERATORS ON GENERALIZED LIPSCHITZ SPACES

In this paper, boundedness and compactness of the composition operator on the generalized Lipschitz spaces Λα (α > 1) of holomorphic functions in the unit disk are characterized.     

BERGMAN TYPE OPERATOR ON MIXED NORM SPACES WITH APPLICATIONS

ＢＥＲＧＭＡＮＴＹＰＥＯＰＥＲＡＴＯＲＯＮＭＩＸＥＤＮＯＲＭＳＰＡＣＥＳＷＩＴＨＡＰＰＬＩＣＡＴＩＯＮＳＲＥＮＧＵＡＮＧＢＩＮＳＨＩＪＩＨＵＡＩＡｂｓｔｒａｃｔＴｈｅａｕｔｈｏｒｓｉｎｖｅｓｔｉｇａｔｅｔｈｅｃｏｎｄｉｔｉｏｎｓｆｏｒｔｈｅｂｏｕ...     

TWO PROBLEMS ABOUT COMPOSITION OPERATORS ON HARDY SPACE

In this paper, two problems about composition operator on Hardy space are considered. Firstly, a new estimation of the norm of a class of composition operators is given. Secondly, the cyclic behavior of the adjoint operator of a composition operator is discussed.