论文标题
基于增强的鞍点系统的预处理
Augmentation-Based Preconditioners for Saddle-Point Systems with Singular Leading Blocks
论文作者
论文摘要
我们考虑具有单数领先块的对称鞍点矩阵的迭代解。我们开发了一个新的理想正定块对角度调节器，该预处理产生了一个具有四个不同特征值的预处理操作员。我们提供了一些使预科人员实用的技术，并通过数值实验说明了我们方法的有效性。
We consider the iterative solution of symmetric saddle-point matrices with a singular leading block. We develop a new ideal positive definite block diagonal preconditioner that yields a preconditioned operator with four distinct eigenvalues. We offer a few techniques for making the preconditioner practical, and illustrate the effectiveness of our approach with numerical experiments.
