查询词典 conformable matrices

We show several necessary and sufficient conditions for the invertibility of commutator of idempotent and involutory matrices.

研究了复数域上两个n阶幂等矩阵P与Q的换位子PQ-QP的可逆性问题。

One construction of Cartesian authentication codes from the normalform of Idempotent matrices over the field Fq is presented.

本文利用有限域上幂等阵的相似标准形，构造了一个Cartesian认证码，并计算出该码的所有参数。

Having found quite by chance that some solution matrices of Dirac are square roots of 4 × 4 identity matrix.

偶然发现了一些与Dirac方程的解有关的矩阵是4×4单位矩阵的一种特殊形式的平方根。

You can think of an identity matrix for matrices as being the number 1 for scalars, or regular numbers.

你可以把一个单位矩阵认为是数字标量1或者是一个正规数。1乘以任何数还是等于数本身。

Based on a brief review on developments of number system, a new developed pattern is proposed. The quaternion is extended to a matrix form aI+bA+cB+dC, in which the identity matrix I and three special matrices A, B, C correspond to number 1 and three units of imaginary number i, j, k, respectively.

在数系发展的基础上，提出了一种新的发展模式：四元数推广为矩阵形式aI+bA+cB+dC，其中单位矩阵I和3个特殊矩阵A，B，C分别相应于数1和虚数单位i，j，k。

Compared with the previous polynomial interpolating method, this method can avoid ill-conditioned matrices in the process of the calculation and obtain more accurate values.

相比于以前介绍的多项式方法，此方法不但能避免矩阵的病态，而且提高了计算的精度和效率。

According to the requirements of plant cell immobilization techniques, a number of immobilized matrices were developed and used.

根据长春花植物细胞的特点，开发了几种固定化载体，并进行了固定化培养长春花细胞的研究工作。

Studies are encouraged to find new imprinting matrices and methods to satisfy the requirements of electrochemical sensing elements.

因此，寻找新的印迹基质和印迹方法以满足电化学传感器对敏感元件的要求具有重要的研究意义。

Also, they can be used alone or in combination with other matrices to achieve the sufficient mechanical integrity.

文章讨论了纤维蛋白基材料的主要性能，并重点论述了此类材料在组织工程中的应用现状和面临的问题。

The conventional matrix decomposition methods have been used to find the least-squares solutions of the abovementioned inconsistent matrix equations over given matrix set in many references, and the general expressions of these solutions were obtained. But it is difficult to determine the solution of Problem I by utilizing these expressions due to the fact that the orthogonal invariance of Frobenius norm does no hold for the general nonsingular matrices.

对于求上述不相容矩阵方程在给定矩阵集合上的最小二乘解，很多文献中利用传统的矩阵分解方法得到了其通解表达式，但是利用该表达式很难得到问题Ⅰ的解，这是因为一般的非奇异矩阵并不满足Frobenius范数的正交不变性。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。