Hi,
This looks like a Lyapanov equation. It is used in control theory I
think. There might be something if you search in those packages that
deal with this.
HTH,
On Feb 16, 9:25 am, ?|???x <koaihs... at gmail.com>
wrote:> Hi everyone,
>
> I have a question to solve linear equations with argument is a matrix.
> For example, X is a q by p matrix satisfies
>
> F(X)=A and t(B)%*%X+t(X)%*%B=0,
>
> where A and B are known q by p matrices and 0 is p by p matrix with
> all elements are 0s. And F(.) is a known function of matrix, X.
> Now, I try to solve X. Can anyone help me? Thanks a lot.
>
> ______________________________________________
> R-h... at r-project.org mailing
listhttps://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.