# matrix in \frac{}{}

Bodo Steiner bsteiner at are.berkeley.edu
Mon Feb 16 19:26:04 CET 2004

Hi, I'm trying to get this running, but it won't ... how can I have a
matrix in the following formula:

$$\alpha^{\star}=\frac{\mbox{\boldmathz}^{T}\mbox{\boldmath\Lambda} \mbox{\boldmath\Sigma}}{\mbox{\boldmathz}^{T}\mbox{\boldmath\Lambda} \begin{bmatrix}-\mbox{\boldmathK}_{1}^{-1}&0\\ 0&\mbox{\boldmathK}_{2}^{-1} \end{bmatrix}\mbox{\boldmath\Lambda}^{T}\mbox{\boldmathz} +r\mbox{\boldmathz}^{T}\mbox{\boldmath\Lambda} \mbox{\boldmath\Sigma}\mbox{\boldmath\Lambda}^{T}{\mbox{\boldmathz}}$$

thanks!
-bodo.