block triangular 中文意思是什麼

block triangular 解釋
區三角
  • block : n 1 片,塊,大塊;粗料,毛料;木料;石料;金屬塊;【建築】塊料,砌塊;【地質學;地理學】地塊。2 ...
  • triangular : adj 三角(形)的;由三個部分構成的,三重的;三方面的(斗爭等);三國間的(條約等)。 triangular c...
  1. In this paper we first give the definition of a type of block upper triangular matrix algebras and then characterize linear surjective maps that preserve rank one from one block upper triangular matrix algebra of this type to another

    本文的主要結果是確定了一類分塊上三角矩陣代數的保持秩一的線性滿射。本文首先定義了一類分塊上三角矩陣代數( c ) ,然後確定了保持秩一的線性滿射。
  2. The results of benzenoid lattice by site - block based on ising model are closer to the exact values of ising model than the triangular an d hexagonal lattices

    本文在計算過程中仍採用重整化群的自旋?元塊法,並採用ising模型,計算出的結果比三角和六角格子更接近ising模型的嚴格解。
  3. 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。
  4. Particularly for navier - stokes equation, we will compare the gmres methods with different preconditioned. we make some variances from the hss preconditioner ( [ 15 ] ), that are ma1 - ma4 in our paper. comparing with block triangular preconditioner we will find that the cpu time for ma1 is the smallest

    對navier - stokes方程的求解,我們重點是比較不同預條件的gmres方法,對基於對稱,反對稱分裂( hss )的預條件( [ 15 ] ) ,我們提出幾種變形,本論文分別用m _ ( 1 ? m _ ( 4 )來表示,並用它們和約束預條件做比較,結果表明,在計算時間上m _ ( 1 )是最少的,最後我們對ep線性方程組的廣義逆解的擾動分析的某些結果也通過數值實驗給予驗證。
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