查询词典 triangular number

Fast algorithm of minimal norm least square solution for Cauchy linear system;2. For the m×n Cauchy-type matrix with full column rank,the fast algorithm of the minimal norm least square solution to the linear system Cx=b was obtained by construction of a special block matrix and study of the triangular decomposition.

对于秩为n的m×n阶Cauchy型矩阵C，通过构造特殊分块矩阵并研究其三角分解，进而得到了线性方程组C x=b的极小范数最小二乘解的快速算法，所需运算量为O+O(n2)，而通常构造法方程组的方法所需运算量为O(m n2)+O(n3)，用正交化法虽然避免了构造法方程组，但所需的运算量更大些。

As an application, we also describe the Jordan automorphisms of the algebra of upper triangular matrices over commutative rings, and give a sufficient and necessary condition for a commutative ring being connected.

作为应用，我们还刻划了交换环上的上三角矩阵代数的Jordan自同构，并给出了一个交换环是连通环的充要条件。

Based on conformal mapping and differential geometry theory,a triangular mesh parametrization method by optimizing deformation energy is proposed in the paper.

本文首先基于保形映射和微分几何相关理论，定义了一种统一衡量参数化的角度变形和面积变形的变形能量。

In this paper a method of automatic mesh generation of triangular element is presented by using subdomain structure and isoparametric coordinate transformations for two-dimensional complex connected domain with multidielectric.

本文采用子区域结构，等参坐标变换方法，对具有多种介质的二维复连通区域，给出一种三角形单元的网格自动剖分方法。

At the first step, the predicted value is solved, which is a constant function on each triangular element.

第一步是求出单元常值近似的预估值，第二步是求Galerkin近似的修正值。

Because of the lot being of triangular shape located in a corner, the legal edification lines left the constructible area in the center, a steep incline of 40%, and finally, sun exposure and views towards the valley.

这个三角形地块位于一个角落，远离整个规划社区的中心，在它的北侧是一个坡度为40%的峭壁，当然它还拥有充足的阳光和优美的山谷景致。

A discrete method for contouring of high order triangular elements is presented in this paper.

该文提出一种画高次三角形单元等值线的离散方法。

This paper studies the mesh morphing in two aspects, one is the morphing algorithm of planar triangular mesh based on the convex combination.

另一种是基于角度插值的三角网格变形算法，这是一种仅通过插值角度来实现任意网格变形的方法。

Culm sheaths symmetrical, apex convexly or triangularly arched, or asymmetrically triangular

匀称，convexly 顶或者三角形拱起的竿箨，或者不对称的三角形 27

Calyx deep purple, campanulate-rotate, 3-5 × 4-6 cm; sepals connate beyond attachment to ovary, abaxially glabrous; tube lantern-shaped, 1-2 × 1-2 cm, constricted at throat, adaxially longitudinally corrugate, becoming reticulate above, orifice ring 3-4 mm wide; lobes ovate to broadly ovate, 2-3 × ca. 2 cm, base with triangular corrugate-papillate area.

花萼深紫色，钟状辐状， 3-5 * 4-6 厘米；萼片合生超过贴生的子房，背面无毛；筒部灯笼形， 1-2 * 1-2 厘米，缢缩在喉部，正面纵向具皱褶，变得在上面网状，宽3-4毫米的孔环；裂片卵形到宽卵形， 2-3 *约2厘米，基部具三角形具皱褶区。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。