查询词典 defect of operators

Chapter 3 studies the compactness of product operators of a composition operator C〓 with the adjoint C〓 of another composition operator C〓 on weighted Bergman spaces A〓. We give some conditions in terms of angular derivatives of the inducing maps ψ and ψ for the operator C〓C〓 or C〓C〓 to be compact.

第三章研究了加权Bergman空间上的一个复合算子C〓与另一个复合算子C〓的共轭算子C〓的乘积C〓C〓与C〓C〓的紧性问题，我们用φ与ψ在〓D上的角导数的某种关系给出了C〓C〓与C〓C〓在A〓上为紧算子的一些判据。

It is necessary to point out that our results not only extend the classical results of composition operators C〓 on Hardy spaces, Bergman space, Dirichlet space and Nevanlinna class, but also expand composition operator C〓 to sequence {C〓} or C〓C〓 and C〓C〓, and expand basic spaces to the vector-valued analytic function spaces, etc.

应该指出的是，本文不仅涵盖了经典Hardy空间、Bergman空间、Dirichlet空间、Nevanlinna类上复合算子C〓的原有结果，而且进一步弄清了不同空间之间的复合算子的性质，同时扩展了单个复合算子C〓至复合算子序列{C〓}及乘积算子C〓C〓与C〓C〓的情况，基本空间扩展至向量值解析函数空间的情形等等。

Iii By using the well-known properties of the dela vallee-poussin summability kernels and the pass principle of weakly compact operator, we study the weak compactness of C〓 on vector-valued analytic function spaces H〓, B〓, N and N〓, establish some connections between the weak compactness of composition operators and the structure properties of Banach spaces. These generalize and unify the corresponding results in the scalar-valued setting and enrich the content of the study of composition operator in another way.

第三，利用著名的de la Vallee-poussin可和核及有关算子的弱紧性的传递原理给出了向量值解析函数空间H〓、B〓、N及N〓上的复合算子的弱紧性的刻画，建立了复合算子的弱紧性与Banach空间的结构性质之间的联系，统一和推广了对应的数量值解析函数空间上的复合算子的弱紧性，这从另一种途径极大地丰富了复合算子的研究内容。

A join is one of the set operators of relational algebra used to concatenate data found in different tables.

一加入，是一个集商关系代数用来串数据发现，在不同的表。

This is also similar to how the concatenation and repetition operators that we have seen previously do their work.

如果你把一个列表对象传给list函数，便会创建这个对象的一个浅拷贝，然后将其插入新的列表中。

Dictionaries will work with all of the standard type operators but do not support operations such as concatenation and repetition.

字典可以和所有的标准操作符一起工作，但却不支持像拼接和重复这样的操作。

As there are no other overloaded operators like string concatenation in Java.

这个例子有一些极端，就像在Java中没有连接字符串的操作符一样。

This is because there are two shortcomings inherent in coding method based on difference operators:(1) chain is long and consequently speed of recognition is low;(2) features of waveform such as concavity and convexity can not be described.

该方法与以往基于差分因子进行编码的方法相比较，具有以下优点：（1）链表达短，进而使后续的剖析速度大大加快；（2）不但注重波元的升降特征，而且还注重波元的凹凸特征。

The influence of the concentration of business operators on the national economic development, and

经营者集中对国民经济发展的影响

"There is potential for a lot of confounding , and I think the biggest confounder is that we don't know what we're dealing with," that is, what were the clinical characteristics of patients that led operators to perform PCI on more than one coronary vessel?

"可能有很多混杂因素的干扰，我认为最大的混杂因素是我们不知道问题的本质"，也就是，导致操作者决定进行多支冠脉血管 PCI 的患者特征是什么？

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&