查询词典 description operator

Secondly, the characters of abstract operator are discussed and the operator is proved to be an infinitesimal generator of analytic semigroup.

然后，讨论了构造的抽象算子的基本性质，证明了抽象算子的生成元性质。

We give another form of the infinitesimal time translation operator in algebraic dynamical algorithm so that it is more easy to use new operator to solve evolution equations.

我们给出了求解偏微分演化方程的代数动力学解法中关于时间平移的无穷小算子的构造的另一个形式，使得在应用代数动力学方法求解偏微分方程时更简洁更方便。

Especially, if we let Φ denote the mininal Q process, and A denote the corresponding infinitestmal operator, then the primary problem is how to describe the infinitesimal operator ,D

特别地 ，记最小Q过程为Φ，对应的无穷小算子为 A ，我们的首要问题是如何刻划最小Q过程的无穷小算子 A ，D

Subsequently, we discuss the generalized derivable mappings at zero point on standard operator algebras and show that every generalized derivable mapping at zero point on standard operator algebras is a generalized inner derivation.

其次又对标准算子代数上的在零点广义可导的线性映射进行了讨论，证明了标准算子代数上的在零点广义可导的线性映射是广义内导子。

In this paper, a new technique (so-called large-step wavefield depth extrapolation method), that is based on the Lie algebraic integral of operator's phase to compute depth extrapolation operator efficiently, is proposed.

本文提出一种基于"算子相位"李代数积分的快速计算延拓算子的方法，称为大步长波场延拓方法。

In this paper, a new technique (socalled largestep wavefield depth extrapolation method), that is based on the Lie algebraic integral of operator's phase to compute depth extrapolation operator efficiently, is proposed.

本文提出一种基于"算子相位"李代数积分的快速计算延拓算子的方法，称为大步长波场延拓方法。

To adjust the trust value, we adopt the Proportional operator and Integral operator. The simulation experiments show that agent can provide valuable information to the user. The global performance under distributed mode can reach the 73 percent of the global performance under centralized mode with perfect information. As the time goes on, the agent can adapt to the user's need gradually.

的分布式合作信息推荐的性能，Agent之间基于信任联系进行合作，采用控制理论中的比例算子和积分算子进行局部信任调整，实验表明，分布式信息推荐的质量达到了信息完备状态下集中式全局最优的73％，随时间变化，系统性能的逐渐优化也体现了算法的学习能力和适应性。

The well-known invariant subspace problem is A long-standing problem in operator theory,which has been to determine whether every operator $T$ on a Banach space $X$ must have a nontrivial invariant subspace.

不变子空间问题是一个尚未解决的问题， Enflo反例所给出的没有不变子空间的算子不为任何算子的共轭。

In addition, we study the reduced minimum modulus of the generalized Drazin inverse of an operator on a Banach space and give out lower and upper bounds of the reduced minimum modulus of an operator and its generalized Drazin inverse, respectively.

第四章讨论了左乘算子L_A∈BB(H的约化极小模与A的约化极小模的关系；讨论了广义Drazin可逆算子的广义Drazin逆的约化极小模的上下界及广义Drazin可逆算子的广义Drazin逆的约化极小模与算子的约化极小模的关系。

The general conditions of invertible completions of operator matrix Mx are supplied and the intersective characterization of the resolvent set of operator of Mx are been desribed.

4研究了算子逆配置的等价条件，并借助算子的ε-限制逆配置的刻画及正算子、紧算子的特性，完全刻画了算子对的逆配置。

He got into race cars, while my father liked go-karts more, so I didn't really pay attention to what Diego was doing, as I was just racing karts.

叔叔开的是跑车，而我父亲更喜欢越野卡丁车，所以我并不太关注Diego在做什么，我仅仅在跑我的卡丁车而已。

She is at present gone to look for the best nectar and ambrosia to regale me this evening.

她今晚为款待我，现在又去准备美酒佳肴去了。