# [OS X TeX] Lucida and bold math

Bruno Voisin bvoisin at mac.com
Sat Jul 29 11:28:58 EDT 2006

Le 29 juil. 06 à 16:43, Jürgen Pöschel a écrit :

> usually -- eg with Latin Modern or MtPro-fonts -- when writing
> \boldsymbol $x+\sigma$ or $\bm{x+\sigma}$, you get just that,
> the symbols "x + sigma" in bold.

Beware: the syntax of amsmath's \boldsymbol is different from LaTeX's
original \boldmath. You should use $\boldsymbol{x+\sigma}$, similar
to $\bm{x+\sigma}$.

> Not so with Lucida and lucidabr.sty or the newer lucimatx.sty.
> The bold sigma does not show up, the place is left empty.
> You have to aks for \upsigma to get a bold sigma.
>
> It took me quite some time to find this out.
> My question is: Is this a bug or a feature?
> And is it possible to point this out in the
> documentation?

There must be something wrong with your installation (or an incorrect
invocation of the Expert fonts, see below).

On my setup (Lucida Bright/NewMath Expert fonts from circa 1995,
purchased from Blue Sky Research and converted from LWFN to PFB
format for use with TeXShop), with the lucidabr.sty package, all
works well. I tried, with both pdfTeX and TeX + dvips, the following
input:

\documentclass[12pt]{article}
% \usepackage[LY1]{fontenc}  % with or without this
% \usepackage[T1]{fontenc}  % with or without that
\usepackage[expert,lucidasmallscale]{lucidabr}
\usepackage{bm}
\usepackage{amsmath}
\begin{document}
$x+\sigma \qquad \bm{x+\sigma} \qquad \boldsymbol{x+\sigma}$
\end{document}

Both \bm and \boldsymbol yield bold italic sigma.

Now, if I try the same removing the [expert] option, I get poor man's
bold (multiple copies of each non-bold symbol pasted with slight
offsets) for \bm, and non-bold for \boldsymbol. Thus your problem
might be either the absence of the Expert fonts, or the absence of
the [expert] option when inovking lucidabr.sty. I can't try with
lucimatx, as I don't have it.

Hope this helps,

Bruno Voisin------------------------- Info --------------------------
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