Date: Nov 13, 2012 6:57 PM Author: Ray Koopman Subject: Re: Least-squares scaling On Nov 13, 3:35 pm, kalle_ruta...@hotmail.com wrote:

> I wrote:

> > SPP^T + PP^T S = RP^T + PR^T

>

> This equation is known as a Lyapunov equation:

>

> http://en.wikipedia.org/wiki/Lyapunov_equation

>

> It seems I should find algorithms for solving such equations.

>

> --http://kaba.hilvi.org

Yup. I was just about to post the same thing.