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PCG
- ％ SSOR预处理的共轭梯度法求解方程Ax=b ％ 输入参数说明 ％ A 正定矩阵[n*n] ％ b 右边向量 ％ omega SSOR预处理参数(0--2) ％ Times 迭代次数 ％ errtol 给定误差终止条件 ％ ％输出参数 ％ NewX 方程Ax=b的x近似解 ％ avgerr 求解的当前平均绝对误差- SSOR preconditioning conjugate gradient
Examples
- To run these examples, you first need to set search paths to the codes in RestoreTools. This can be done by running the scr ipt startup.m The most recent version of RestoreTools has two new features: 1. psf
MINRES
- 采用CG法求解稀疏对称奇异矩阵得到的Ax=b-Implementation of a conjugate-gradient type method for solving sparse linear equations: Solve Ax = b or (A- sI)x = b. The matrix A- sI must be symmetric but it may be definite or indefinite o
SYMMLQ
- 采用CG法求解稀疏对称非奇异矩阵得到的线性系统Ax=b-Implementation of a conjugate-gradient type method for solving sparse linear equations: Solve Ax = b or (A- sI)x = b. The matrix A- sI must be symmetric and nonsingular, but it may be de
fulltext5
- A preconditioner for the equations of linear elasticity discretized by the PEERS element
Mathematical-Theory-of-FEM
- 《有限元方法的数学理论》中不但提供有限元法系统的数学理论。还兼重在工程设计和分析中的应用算法效率、程序开发和较难的收敛问题。目次：基本概念；Sobolev空间；椭圆边界值问题变分公式；有限元空间结构；Sobolev空间中的多项式近似理论．n维变分问题；有限元多栅法；加性Schwarz预条件； 极大范数估计；自适应网格； 变分病态、在平面弹性力学中的应用；混合法；迭代技巧用于混合法；算子插值理论的应用。读者对象；数学、物理和工程专业的研究
jacobi4
- Jacobi preconditioner solver
ssi
- krylov子空间法 krylov子空间方法的程序实现，用于解高阶矩阵-Matlab Codes for Krylov subspace methods 1. MINRES method by Paige and Saunders implementation function [ x, istop, itn, rnorm, Arnorm, Anorm, Acond, ynorm ] = ... minres( A, b,
precon
- Krylov迭代方法的各种预处理方法，包括ILU0，ILUC等-the preconditioner of Krylov method
hsl_mi20-2.0.0
- 对于非对称矩阵线性方程组的代数多重网格预处理子的生成(HSL_MI20 Unsymmetric system: algebraic multigrid preconditioner)