Mathematical software

NAPACK
Referenced in 71 articles [sw11666]
matrix by a vector, to invert a matrix, to solve least squares problems, to perform ... special routines for general, band, symmetric, indefinite, tridiagonal, upper Hessenberg, and circulant matrices. (netlib napack...

MINRES
Referenced in 38 articles [sw13371]
matrix A−sI must be symmetric but it may be definite or indefinite or singular...

MA57
Referenced in 92 articles [sw00536]
direct solution of sparse symmetric linear equations that solves indefinite systems with ... features of MA57. These include restart facilities, matrix modification, partial solution for matrix factors, solution...

LDL
Referenced in 19 articles [sw00507]
sparse matrices, with some applicability to symmetric indefinite matrices. Its primary purpose is to illustrate ... much of the basic theory of sparse matrix algorithms in as concise a code ... possible, including an elegant method of sparse symmetric factorization that computes the factorization...

ParaSails
Referenced in 29 articles [sw11521]
pattern of a power of a sparsified matrix. ParaSails also uses a post-filtering technique ... sequence of linear solves. ParaSails solves symmetric positive definite (SPD) problems using a factorized ... ParaSails can also solve general (nonsymmetric and/or indefinite) problems with a nonfactorized preconditioner. The software ... parallel CG and GMRES solvers, a parallel matrix class and a test driver...

symamd
Referenced in 7 articles [sw08565]
ordering for S, symamd constructs a matrix M such that spones(M’*M) = spones ... function may also work well for symmetric indefinite matrices...

NAPACK