An efficient preconditioner is derived from the multigrid stiffness matrix.
一个高效的预条件子是来自多重网格刚度矩阵。
2
In the second chapter, we present an additive Schwarz preconditioner for the rotated Q_1 finite element discretization of second order elliptic problem.
我们在第二章中构造了求解用旋转Q_1有限元离散椭圆型偏微分方程的区域分解方法。
3
Some preconditioner technique is also studied to improve the condition number and further accelerate iterations, comparisons are made between them by numerical results.