查询词典 algebraic form

Chapter 1 is introduction.we introduce the importance of homological theory in Algebras, and the close relations with other algebraic branchs.

第一章为引言，主要介绍了同调理论在整个代数学中的重要位置以及与其它代数分支的密切联系。

Elastic and inelastic differential and integral cross sections for low-energy vibrational excitation of H2 by electron impact are studied with exact exchange. The resulting coupled integrodifferential equations are solved using a combination of linear-algebraic and R-matrix-propagator techniques.

严格交换势用于研究低能电子与H2分子的弹性和非弹性散射截面，线性代数方法和R-矩阵传播子相结合求解基于振动密耦合方法的积分-微分耦合方程组，由此得到收敛的散射微分截面和积分截面。

Both of the algorithms with two forms for the parallel data and fan beam data respectively are developed based on the interpolative algebraic reconstruction techniques.

这两个算法对于不同的相叠采样模式，具体表现为四个算法：平行束的虚拟探测器法、平行束的直接重建法、扇形束的虚拟探测器法和扇形束的直接重建法。

The numerical experiment results show that the imaging convergent speed of the direct demodulation imaging method is accelerated dramatically using the ways proposed in the present paper.Furthermore, the author proposes one way to improve timing performance of parallel interpolative algebraic reconstruction.

此外初步研究了平行束的插值代数重建算法，在求像素投影地址时利用像素与像素投影之间的相关性和图像区域的对称性来提高插值代数重建算法重建图像的速度。

The main findings in this thesis are as follows:(1) Through the algebraic analyzing of the hydrologic map and the analysis and processing of the digital image, one could learn the knowledgement of the electronic map and digital image.

主要成果如下：(1)通过水文等值线图的代数分析、数字图像本质分析，加深了对电子地图和数字图像的认识。

We know that every nonelementary subgroup of 〓 contains infinitelymany loxodromic elements,no two of which have a common fixed point and thisproperty of nonelementary subgroup is very important for the study of discretecriteria and algebraic limit theorems for subgroups of 〓.

我们知道〓上〓变换群的Beardon非初等子群G有一个非常重要的经典结果：G中存在无穷多个斜驶元素，且他们两两没有公共不动点。

In this paper, we investigate the problem of the existence of transcendental meromorphic solutions of a type of algebraic differential equation and obtain a result.

文摘：讨论了一类代数微分方程的超越亚纯解的存在性问题，得到了一个结果。

Full vibrational energy spectra {E} and molecular dissociation energies D are studied using conventional least-squares fitting and an algebraic method proposed for some diatomic electronic states of NaK molecules.

应用传统的最小二乘法和作者基于微扰理论建立的代数方法，本文研究并比较了双原子分于NaK的部分电子态的振动能谱和离解能。

We analyze formers centers conditions for polynomial Lienard equations, give direct conditions of a nondegenerate center at the origin with elimination theory, and give an algorithm for general situations with algebraic elimination methods of polynomials.

运用多项式的代数消元法，对前人给出的多项式Liénard方程的中心判据进行分析，对多项式的系数给出原点是非退化中心的直接条件，并对较一般的情形给出算法。

Next,we obtain several discrete criteria and algebraic limit theorems forMartin nonelementary subgroups of I som.

首先，我们证明了Martin非初等群真包含Bowditch非初等群，但是，对离散群，它们是等价的。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。