查询词典 involutory algebra

When I grow up, learning from simple to more difficult algebra calculus, from basic science to chemical and biological, and I used to use the know-how has been watered down.

当我长大后，学习内容也从简单的代数转到更难的微积分，从基础科学转到化学和生物，而我以前的诀窍使用起来也大不如前。

In fact, algebra is a simple language, used to create mathematical models of real-world situations and to handle problems that we can't solve using just arithmetic.

实际上，代数是一种简单的语言，用于对现实世界建立数学模型，而且还用于处理一些仅用算术无法解决的问题。

Classification of simple modules for Hecke algebra of type D_n is an open problem in representation theory of Hecke algebras.

D_n型黑克代数的单模的分类是黑克代数表示论中一个公开的问题。

This method makes full use of the structural features of the reliable distribution network, optimizes the numbered branches, nodes and loads, uses directly branch impendance parameter to calculate, and doesn't need formming bus admittance matrix and converting triangular matrix. Simple dealing with algebra equations can calculate node voltage and power distribution, which makes the program more efficient and exact.

该方法充分利用辐射配电网络的结构特点，对分支、节点和支路编号进行优化，它直接采用支路阻抗参数进行计算，不需要形成节点导纳矩阵和进行三角矩阵变换，简单的处理代数方程就可以计算节点电压和功率分布，使得程序实现起来更加高效、准确。

Emulation result makes clear, be based on extensive the control of logistic control method of Boer algebra is simple, agile, convenient, effective, this logistic control algorithm fits typical ship lift structure, have apparent aseismatic damping effect, achieved ship lift structure requirement of aseismatic pilot project.

仿真结果表明，基于泛布尔代数的逻辑控制方法控制简单、灵活、方便、有效，该逻辑控制算法适合典型的升船机结构，具有明显的抗震减震效果，达到了升船机结构抗震控制的工程要求。

This result is a generalization of the Chevalley basis in case a simply-laced complex simple Lie algebra. Meanwhile, it generalizes also the corresponding Chevalley forms in case affine Lie algebras and 2- extended affine Lie algebras.

该结果是simply-laced复半单李代数情形下Chevalley基的推广，同时也是仿射李代数和2-扩大仿射李代数的相应Chevalley结构形式的推广。

If A is D-simple, i. e., A doesn't have any nontrival D-stable ideal, we have the generalized Weyl type simple algebra A .

Der为A上所有F-结合导子组成的李代数。D为Der的任一非零交换李子代数。

In part 1, some basic statistical concept and algebra operations are reviewed, simple regression and multiple regression models are introduced.

本课程将提供学生如何应用实际的资料，建构适当的模型，以及进行模型推估结果的检定，主要内容包括三个部分；1。

Finally, by using a semi-open quadrature rule, the singular integral equations were transformed to algebra equations.

最后，由位错密度函数得到各裂纹分支端的应力强度因子值。

This paper analysised and researched some existing algebra feature extraction method such as KL transformation, singular value decomposition、 Fisher linear discriminant and optimal discriminant transformation. On the base of this、we expound a method which named uncorrelated optimal discriminant transformation to accomplish the face recognition.Uncorrelated optimal discriminant transformation is a improvement of Fisher linear discriminant and optimal discriminant transformation.

本文对一些现有的代数特征提取方法如KL变换、奇异值分解、Fisher线性鉴别以及最佳鉴别变换做了分析和研究，在此基础上我们提出使用具有统计不相关最佳鉴别变换的投影方法来进行人脸识别，它是由Fisher线性鉴别和最佳鉴别变换改进、完善而来的。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。