查询词典 invariance

Some elementary concepts and overviews of ordering of risks are given, then discuss some equal conditions and pleasant invariance properties of stop-loss order after some operations such as convolution, compounding, mixing and forming conditional compound Poisson Sums.

第三节中得到保险常见损失分布和索赔次数的顺序关系，指出属于不同分布族的两个分布之间顺序关系较弱，其次，由于索赔次数多为复合泊松分布，因此索赔次数之间比较关系不明显。

We believe it is a new point of view to study visual perceptual invariance through the structure information of images by sheaf theory. In addition, it is also available of plenty of resources in modern mathematics.

利用层论从图象的结构信息角度研究视觉感知现象是一种新颖的观点，而且有较多的现代数学结果可资利用。

The superstring action has global SU (2, 2|4) super-invariance and local κ symmetry.

超弦的作用量采用Green-Schwarz的形式，它具有时空整体的SU（2，2|4）超对称性以及世界面上的局域的κ超对称性。

The curve, to be calledλ-Bezier curve not only inherits themost properties of n-degree Bezier curve, such as endpoints properties, symmetry,convex hull property, geometric invariability, affine invariance, convex-preservingproperty, variation diminishing property and so on, but also can be adjusted inshape by changing the value ofλwithout changement of control points.

曲线不仅具有n次Bézier曲线的特性：如端点插值、端边相切、凸包性、变差缩减性、保凸性等，而且具有形状的可调性：在控制顶点不变的情况下，随着参数不同，可产生不同逼近控制多边形的曲线。

The mathematical form of material energy-momentum tensor is the same as a sum of the energymomentum tensor in elastic material and the Maxwell stress tensor in electromagnetic field Moreover, under infinitesimal symmetrical transformations, the infinitesimal invariance condition gives a balance of the field variables and material energy-momentum tensor.

另外，在无穷小对称变换条件下，它指出—种场变量与物质能量-动量张量的平衡关系。

This paper gives the definition of grey topological linear space for the first time, andproves that it has some characters similar to those of ordinary topological linear space,suchas translation invariance ,balance and absorbability.

给出友拓扑线性空间的定义，证明它具有与普通拓扑线性空间相类似的性质，如平移不变性，均衡性，吸收性等。

However, proving axisymmetry for the Onsager model is still very difficult, at least for two reasons: The first is that we lack methods for proving axisymmetry, even though there are method for proving radial symmetry or translation invariance.

但是，证明了Onsager模型轴对称仍然是非常困难的，至少有两个原因：第一，我们缺乏证明轴对称的方法，即使是证明辐射对称或平移不变性的方法。

Combing these expressions with the orthogonal invariance of the Frobenius norm, we overcome the key difficult for the matrix unitary approximation successfully, and obtain the expression of the solution of Problem I.

本文分别利用多种矩阵分解相结合的直接方法和具有短递推格式的迭代方法得到了问题Ⅰ的解，其主要研究成果如下： 1。

A linear camera calibration method with vanishing point and the invariance of cross-ratio is proposed.

在已知一个消隐点的情况下，利用交比不变性及消隐点的知识对摄像机进行标定。

Based on the vector module's characteristics of invariance of translation and rotation coordinate transformation,a new fragment matching method is brought forward.

根据向量模在平移、旋转等坐标变换中具有不变性的特征，给出了一种新的碎片匹配算法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐