# [texhax] Nested commands, Matrix labels

E. Krishnan ekmath at asianetindia.com
Sat Apr 9 05:06:16 CEST 2005

On Thu, 7 Apr 2005, Lloyd wrote:

> 1. I'm trying to bold a subscripted symbol which is also an element in
> a matrix.

Something like this?

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\begin{equation*}
\begin{pmatrix}
x_{\boldsymbol{\alpha}} & x_{\boldsymbol{\beta}}\\
x_{\boldsymbol{\gamma}} & x_{\boldsymbol{\delta}}\\
\end{pmatrix}
\end{equation*}

\end{document}

>  2.  How to I assign an equation number to a matrix equation?   I
> know I can assign "equation" numbers to rows in an array, but that's not
> what I want.

Can you explain this a bit more?

--
Krishnan