How to bold math-mode characters?

Question

Possible Duplicate:
Bold math symbols?

I am wondering if it is possible to bold characters under math-mode, for instance, is it possible to bold $\langle \rangle$?

Answer 1

Try the bm package:

\documentclass{article}
\usepackage{bm}
\begin{document}
$\bm{\langle \rangle}$
\end{document}