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LDL-2.0.1.tar
- 对基于稀疏矩阵存储技术的对称正定稀疏矩阵进行LDL分解，C++编写-LDL is a set of concise routines for factorizing symmetric positive-definite sparse matrices, with some applicability to symmetric indefinite matrices. Its primary purpose is to illustrate much of the basic theory of
relation
- 判断矩阵是否是自反的，对称的，离散数学中的二元关系。-Matrix to determine whether it is reflexive and symmetric, Discrete Mathematics in the binary relation.
squaregrey
- 该函数是求出N*P矩阵的各行间的1减去平均灰色关联度对称矩阵，并用矩阵Z输出-The function is calculated N* P matrix between the lines of the one minus the average gray relational grade symmetric matrix, and output matrix Z
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 or singular. The scalar s is a
Console21
- Fortran产生随机对称正定矩阵，供生成测试数据用-Fortran generates a random symmetric positive definite matrix, used for generating test data
gongetidu
- 共轭梯度法的matlab实现，给出任意的一个对称矩阵，可通过较小的迭代次数得到所要求精度的数值解-Conjugate gradient method matlab to achieve, given any symmetric matrix by a smaller number of iterations to obtain the required accuracy of the numerical solution
Array_base
- 实现对称矩阵、上三角矩阵、下三角矩阵、三对角矩阵等特殊矩阵的存储-Symmetric matrix, upper triangular matrix, lower triangular matrices, tridiagonal matrix, such as special matrix storage
eigenvalue-decomposition
- 求解实对称矩阵的特征值和特征向量，并输出最小特征值和对应的特征向量-Solution of eigenvalues and eigenvectors of real symmetric matrix, and output the minimum eigenvalues and corresponding eigenvectors
eigen
- 求实对称矩阵的特征值特征向量，内有读入数据文件。-Realistic symmetric matrix eigenvalue eigenvector, there are read into the data file.
maxvec
- 用IDL语言编写的计算实对称矩阵的的最大特征值与特征向量，可在主成分分析和偏最小二乘分析中应用。-the procedure uses IDL language to calculate the biggest eigenvalues and corresponding eigenvectorsof a real symmetric matrix A , and is very useful for principal component analysis and p
juzhenyunsuanqi
- 【问题描述】已知A和B为两个n*n阶的对称矩阵，求这两个对称矩阵的转置、之和与乘积。 用三元组表存储稀疏矩阵并实现转置。 【基本要求】 输入时，对称矩阵只输入下三角形元素，压缩存储存入一维数组。 对输入的对称矩阵A和B进行显示。 求对称矩阵A和B的转置矩阵。 求对称矩阵A和B的之和。 求对称矩阵A和B的乘积。 输入一个稀疏矩阵，用三元组表存储起来。 实现稀疏矩阵的显示。 实现稀疏矩阵的转置。 -[Problem Descr iption] Known
rank
- matlab验证矩阵是否对称，并展示不对称的点和个数-symmetric matrix matlab verify and demonstrate asymmetry and the number of points
diagnonal-matrix
- 一个特殊矩阵的压缩存储程序，主要针对对称矩阵与三角矩阵-A special matrix of compressed storage program, mainly for symmetric matrices and triangular matrix
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, M, shift, show, check, itnlim
tezhengxiangliang
- 复 Hermite矩阵求特征值和特征向量的问题转化为求解实对称阵的特征值和特征向量-On the verification of a method for solving the eigenvalue of complex Hermite matrix, the problem of finding eigenvalues and eigenvectors of the complex Hermite matrix is transformed into the eigenvalues and
Jacobieig
- 这是Jacobi方法，其功能是求是对称矩阵的全部特征值和特征向量。-This is the Jacobi method, and its function is seeking all eigenvalues and eigenvectors of symmetric matrix.
21
- 判断对称矩阵、上三角矩阵、下三角矩阵等案例。-Judgment symmetric matrix, an upper triangular matrix, lower triangular matrix and other cases.
XISHUJUZHEN
- 矩阵中非零元素的个数远远小于矩阵元素的总数，并且非零元素的分布没有规律，则称该矩阵为稀疏矩阵(sparse matrix) 与之相区别的是，如果非零元素的分布存在规律(如上三角矩阵、下三角矩阵、对称矩阵)，则称该矩阵为特殊矩阵。-Matrix china-africa zero element number is far less than the total number of matrix element, and the distribution of the non-zero eleme
雅克比法求对称矩阵的特征值
- 经典Jacobi方法求解对称矩阵特征值(MATLAB描述)，本函数使用经典Jacobi方法来计算一个对称矩阵的特征值(Classical Jacobi method for solving symmetric matrix eigenvalue (MATLAB descr iption), this function uses the classical Jacobi method to calculate the eigenvalues of a symmetric matrix)
xuanbiliang
- 以悬臂梁为例，用有限元法编程生成质量矩阵和刚度矩阵（采用平面梁单元，单元数在10到30之间）。 使用matlab的用于广义特征值问题分析的函数（eig(A,B,'chol')，该命令使用乔莱斯基分解的方法，计算对称矩阵A和对称正定矩阵B的广义特征值问题。A对应刚度矩阵，B对应质量矩阵）计算梁的前三阶固有频率和振型，计算得到梁的前三阶固有频率和振型，并画出振型图。(Taking cantilever beam as an example, the mass matrix and stiffness