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Re: finding eigenvalues

• To: mathgroup at smc.vnet.net
• Subject: [mg45497] Re: finding eigenvalues
• From: "Fred Klingener" <flush at BitBucket.com>
• Date: Sat, 10 Jan 2004 00:00:46 -0500 (EST)
• References: <btncsm$22$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

"Jeremy Watts" <jeremy.watts70 at ntlworld.com> wrote in message
news:btncsm$22$1 at smc.vnet.net...
> I have been wondering on whether there exist methods to find the
eigenvalues
> of a matrix other than solving the characteristic polynomial equation.  Do
> there exist elementary row operation methods that will find the real
> eigenvalues of a matrix?
>
> I have been using a site that will find the eigenvalues of a matrix and
I'm
> wondering how it does it because I'm pretty sure its not doing it by
solving
> the characteristic equation.

It might not make you an expert, but one of the places to start is the
Eigensystems chapter in "Numerical Recipes ... ":

http://www.library.cornell.edu/nr/bookcpdf.html

Hth,
Fred Klingener