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1.
使用Mellin变换作为工具,讨论了Bergman空间上以拟齐次函数为符号的Toeplitz算子的乘积问题,得出了当拟齐次函数的度处于三种不同情况时两个Toeplitz算子乘积仍是Toeplitz算子的充分必要条件.  相似文献   

2.
讨论了Dirichlit空间上Toeplitz算子的紧性,特别地得到了Schatlen类Toeplitz算子的特征,此外,还证明了关于Toeplitz算子的一个非稠密性定理,并证明一个非零的函数可以诱导一个零算子,这与Hardy空间及Bergman空间情形是一重大差别。  相似文献   

3.
Fock空间是由整函数组成的具有再生核的Hilbert空间.Fock空间上的乘法算子的定义域不是整个Fock空间,它在Fock空间上是稠定的.研究了Fock空间上的乘法算子的性质,对其值域进行了刻画,并得出了乘法算子作用在Fock空间的拟不变子空间上值域余一维的充要条件.  相似文献   

4.
卢玉峰 《数学季刊》2000,15(1):103-106
本文描述了圆环的Bergman空间上以径向函数为符号的Toeplitz算子的谱,有界性以及紧性。  相似文献   

5.
A^p(φ)上的Toeplitz算子与Berezin变换   总被引:1,自引:0,他引:1  
讨论了加权Bergman空间A^p(φ)(1<p<∞)上的Toeplitz算子的有限乘积的有限和是紧算子当且仅当其Berezin变换在边界趋向于零。  相似文献   

6.
本文首先讨论调截断和Bergman空间 $b_{n}^{2}$ 上拟齐次函数为符号的Toeplitz算子的有限秩乘积问题,其次考察两个以拟齐次函数为符号的Toeplitz算子的换位子与半换位子的有限秩问题.  相似文献   

7.
讨论单位圆盘中Dirichlet空间上Toeplitz算子的性质,给出了Dirichiet空间上以一类连续函数为符号的Toeplitz算子满足亚正规性的充分必要条件.  相似文献   

8.
首先讨论了Ω符号的Toeplitz算子在Dirichlet空间D2上的交换性,推广了有界调和符号情形,也给出了不同于经典Hardy空间或Bergman空间上交换性的新情形;其次给山了L∞θ.1符号Toeplitz算于与径向或拟齐次符号的Toeplitz算于可交换的充要条件.所得结果与Hardy空间,Bergman空间以及Dirichlet空间D均有不同.  相似文献   

9.
本文讨论了Bergman空间及Hardy空间上总体紧的Toeplitz算子序列.否定回答了陈晓漫等人在文[1]中提出的两个问题.  相似文献   

10.
本文讨论了高维 Dirichlet空间上 Toeplitz算子的若干性质,计算了某些特殊符号的 Toeplitz算子的本质谱  相似文献   

11.
In this paper we characterize the Schatten p   class membership of Toeplitz operators with positive measure symbols acting on generalized Fock spaces for the full range 0<p<∞0<p<.  相似文献   

12.
We give criteria for the membership of Toeplitz operators and products of Hankel operators, with symbols of a certain type, in the Dixmier class, and formulas for their Dixmier trace, on a variety of weighted Segal–Bargmann–Fock spaces on the complex plane.  相似文献   

13.
王晓峰  夏锦  陈建军 《数学学报》2019,62(3):409-426
本文给出了复平面C上广义Fock空间中两个Toeplitz算子T_u和T_v的性质.假设u是一个径向函数,两算子是可交换的.在一定的增长条件之下,我们证明出u也是一个径向函数.最后还构造了一个具有本性无界符号的S_p紧,Toeplitz算子.  相似文献   

14.
通过符号映射研究Fock空间之正交补空间上对偶Toeplitz代数的结构,得到了Fock空间上对偶Toeplitz代数的一个短正合序列.并研究了对偶Toeplitz算子谱的性质.  相似文献   

15.
We obtain characterizations of (essentially) commuting Toeplitz operators with pluriharmonic symbols on the Bergman space of the polydisk. We show that commuting and essential commuting properties are the same for dimensions bigger than 2, while they are not for dimensions less than or equal to 2. Also, the corresponding results for semi-commutators are obtained.

  相似文献   


16.
    
Toeplitz operators with discontinuous presymbols on the Fock space are studied. These presymbols can have two limit values at the points of some subset in ?n, generally speaking of nonzero measure. Nevertheless the Toeplitz operator algebra still admits a commutative symbolic calculus.  相似文献   

17.
We analyze the connection between compactness of operators on the Bergman space and the boundary behaviour of the corresponding Berezin transform. We prove that for a special class of operators that we call radial operators, an oscilation criterion is a sufficient condition under which the compactness of an operator is equivalent to the vanishing of the Berezin transform on the unit circle. We further study a special class of radial operators, i.e., Toeplitz operators with a radial symbol.

  相似文献   


18.
    
In this paper we study generalized Hankel operators ofthe form : ?2(|z |2) → L2(|z |2). Here, (f):= (Id–Pl )( kf) and Pl is the projection onto Al 2(?, |z |2):= cl(span{ m zn | m, nN, ml }). The investigations in this article extend the ones in [11] and [6], where the special cases l = 0 and l = 1 are considered, respectively. The main result is that the operators are not bounded for l < k – 1. The proof relies on a combinatoric argument and a generalization to general conjugate holomorphic L2 symbols, generalizing arguments from [6], seems possible and is planned for future work (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)  相似文献   

19.
    
In this work, we study the boundedness of some operators on the Fock space F and give an application of the theory of reproducing kernels to the Tikhonov regularization, which gives the approximate solutions for bounded linear operator equations on the Fock space F.  相似文献   

20.
    
This paper deals with the relationship between the positivity of the Fock Toeplitz operators and their Berezin transforms. The author considers the special case of the bounded radial function φ(z) = a + be~(-α|z|~2)+ ce~(-β|z|~2), where a, b, c are real numbers and α, β are positive numbers. For this type of φ, one can choose these parameters such that the Berezin transform of φ is a nonnegative function on the complex plane, but the corresponding Toeplitz operator Tφ is not positive on the Fock space.  相似文献   

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