Re: information on Eigensystem
- To: mathgroup at smc.vnet.net
- Subject: [mg33582] Re: [mg33574] information on Eigensystem
- From: zleyk at tca.net
- Date: Tue, 2 Apr 2002 03:36:30 -0500 (EST)
- References: <200204010702.CAA24457@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Eigensystem, Eigenvalues and Eigenvectors in Mathematica (versions 3.x and 4.x) are based on the numerical package EISPACK, or to be more precise, this part of EISPACK which computes eigenvalues/eigenvectors for general square matrices. Mathematica does not have a specialized code for dealing with symmetric matrices. Zbigniew Leyk Borut L wrote: > Hello, > > I am doing a comparison between three methods for finding an eigensystem of > a matrix, Numerical Recipes tqli + tred2, jacobi, and Mathematica's > Eigensystem[]. > > I would like to acquire info on which algorithm does Mathematica have for > finding it out? What does she do in a case of a real symmetric matrix? I am > asking it because I haven't found anything in the implementation notes. > > Thank you for you time, > > Borut from Slovenia > >
- References:
- information on Eigensystem
- From: "Borut L" <gollum@email.si>
- information on Eigensystem