约分

不可约分块Hessenberg矩阵的逆阵

Inverses of the irreducible block Hessenberg matrices

文中给出了直接计算刚度矩阵的公式，作为柔度矩阵的逆阵，它是非病态的。不可约分块Hessenberg矩阵的逆阵

As the reverse matrix of the flexibility matrix it is not in ill condition . INVERSES OF THE IRREDUCIBLE BLOCK HESSENBERG MATRICES

迹非零几乎可约分块布尔矩阵的幂敛指数

The Index of Convergence of Nearly Reducible Block Matrices

矩阵的不可约分块及其应用

Irreducible Blocking of Matrices and Its Application

约分从一个分数表达式的分子和分母去掉（一个公因子）

To remove ( a common factor ) from the numerator and denominator of a fractional expression .

当遇到偏导数时，一定记住，不能约分。

Somehow , when you have a partial derivative , you must resist the urge of simplifying things .

我们只考虑约分后的分数，那么0到1之间的有理数就可以表示成：

Omitting fractions with cancelling factors , this list of all the rational numbers between 0 and 1 would begin :

首先从传递函数可否约分的概念出发，提出了可控可观测新的代数判据；

Starting from the concept of whether or not the transfer function can be made common denomination , a new algebraic criterion of controllability and observability is introduced .

这就是为什么我们用∂，而不是d，提醒大家一下，那些带d的能约分，但在这里不行。

And that is actually the reason why we use this curly d rather than a straight d.It is to remind us , beware , there are these simplifications that we can do with straight d 's that are not legal here .