# Bold italic vectors

I am trying to display vectors as bold and italic. The command \mathbf sets the letters non-italic. I also googled a bit and stumbled upon \mathbf{\em y} or \mathbfit{y}, which all didn't work.

I hope someone can help me on this.

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 I've marked your inline code with backticks . (You don't have to sign with your name since it automatically appears in the lower right corner of your post.) – Hendrik Vogt Mar 28 '11 at 8:30

It depends on the math font, but the bm package can handle most of them. The usage is then $\bm{y}$

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 It does! Thanks :) – Alexx Hardt Mar 28 '11 at 8:24

The answer depends on the math fonts you are actually using. For the standard fonts and as long as you use only letters and numbers this should work:

\documentclass{scrartcl}
\DeclareMathAlphabet      {\mathbfit}{OML}{cmm}{b}{it}

\begin{document}
$a=\mathbfit{a}$
\end{document}
`
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