矩阵

• The condition number, defined below, is changed by scaling the matrix .
  调整矩阵的比例就改变了下面定义的条件数。
• These equations are written more concisely as a single columnmatrix equation .
  这些方程以单列矩阵方程表示会更简单。
• Interconnection of programming function is carried out on a matrix board .
  各种编程功能之间相互衔接在矩阵板上进行。
• If a is the mxn matrix, then the nxm matrix is called the transpose of a .
  如果A是mxn矩阵，那么nxm矩阵为A的转置矩阵。
• It is convenient to shift from index to matrix notation at this point .
  为了方便起见，这里我们把下标记法改为矩阵记法。
• When a large proportion of the elements of a is zero, a is then called sparse .
  当A的大多数元素都是零时，称A为稀疏矩阵。
• a complex n×n matrix u is called unitary if u*u=in.
  一个复nn矩阵U如果U*UIn，则称它为酉矩阵。
• Local deviations depend strongly on the local geometry of the solid matrix .
  局部偏离严格地依赖于固体矩阵的局部几何形状。
• This can be extended to nxn tridiagonal matrix with l, u bidiagonal .
  把它推广到nxn三对角线矩阵使具有两对角线的矩阵L、U。
• next, define the constant elements hij of the n×n hessian matrix h.
  其次，定义nn海赛矩阵H的常数元数为hij。