block diagonal 中文意思是什麼
block diagonal
解釋
分塊對角-
A determinant whose only nonzero elements occur in square blocks centered about the principal diagonal is in block-diagonal form.
僅有的非零元素集中於主對角線的方塊中的行列式是分塊對角形式的。 -
Generalization of block diagonal dominance for matrices and its application
矩陣塊對角占優性的推廣與應用 -
In the first part, we study three kinds of pre - conditioners - - block - triangular preconditioner, constraint preconditioner and block - diagonal preconditioner respective1y and fast iterative so1vers for indefinite 2 by 2 b1ock linear systems with zero ( 2, 2 ) block. the spectrum and form of eigenvalues of each preconditioned nlatrix are presented. all of the three kinds of preconditioned linear systems are so1ved by gmres ( 20 ) and theii efficiencies are cornpared
在第一部分中,我們研究了三種不同的預條件矩陣一塊三角預條件矩陣、約束預條件矩陣和塊對角預條件矩陣作用到2 2塊線性系統(其中右下角塊為零)以後的快速迭代解法,給出了預條件作用后系統的特徵值的譜和形式,比較了三種不同預條件作用后採用cmres ( 20 )方法求解的有效性。
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