MINRES-QLP by Sou-Cheng

Computing min-length (pseudoinverse) solution to symmetric (possibly singular) Ax=b or min||Ax-b||. (singular, symmetric, hermitian linear syst...)

[x,flag,iter,Miter,QLPiter,relres,relAres,...

lobpcg.m by Andrew Knyazev

LOBPCG solves Hermitian partial generalized eigenproblems using preconditioning, competes with eigs (linear algebra, symmetric, partial)

...

TRIDIEGS by Vasil

Find eigenvalues an egien vectors of symmetric tridiagonal matrix. (lapack, dstevx, symmetric)

trideigs.m

Matlab version of qm1d by Vasil

Find and plot eigenvalues and eigenvectors of 1d schrodinger equation. (schrodinger equation, eigenvalues, egenvectors)

qm1d_fast(pot_filename,NPTS,NSTM,L)

Triangular and diagonal indexing by Bruno Luong

A collection of functions to index diagonal and triangular parts of the matrix (indexing, diagonal, matrix)

DiagM(n)

DuplicationM(n, option)

EliminationM(n, varargin)

The matrix exponential by Thomas Schmelzer

Computes exp(A)*b where A is real and symmetric (matrix, functions, vector)

cf_matrixexponential( A,b )

cf_matrixfunction(fct,A,b,n,varargin)

cf_realaxis(fct,n,varargin)

h_trid by Matt Fig

Uses the Householder method to tridiagonalize a matrix. (linear algebra, tridiagonalize househ..., symmetric)

h_trid(A)

Arbitrary Rank Update to Cholesky Factorization by Greg von Winckel

Solves the Cholesky factored system with arbitrary update. (cholesky, matrix, symmetric)

x=cholrankup(R,U,V,b)