Math & Science ⇒ \bm and \nicefrac don't work together

[Singularity]

I can't use \bm and \nicefrac together. Why not? How do I make bold, nice fractions (in math mode, but also out of math mode).

I could not get xfrac to work at all.

MWE:

Code: Select all

\documentclass[14pt,fleqn,reqno]{extarticle}
\usepackage{amsfonts,amsmath,amssymb,amsthm}
\usepackage{mathtools}			% Better choice for bmatrix*, pmatrix*, etc. environments (I'm told)
\usepackage{bm,nicefrac,xfrac}

                                 
\begin{document}
\begin{align*}
  \bm{\nicefrac{1}{4}}
.\end{align*}
\end{document}

[cgnieder]

I don't know why they're not working with \bm but both work with \mathbf:

Code: Select all

\documentclass{article}
\usepackage{mathtools}
\usepackage{bm,nicefrac,xfrac}
\begin{document}
\begin{align*}
  \mathbf{\nicefrac{1}{4}}
\end{align*}
\begin{align*}
  \mathbf{\sfrac{1}{4}}
\end{align*}
\end{document}

I could not get xfrac to work at all.

What does that mean? Did you get errors?

[Singularity]

Ah, yes, that would be helpful information, huh?

I got 97 errors. The first one was "l3kernel too old", and l3keys2e.sty file is opened. I'm attaching the log file.

MWE.log

(55.15 KiB) Downloaded 542 times

[cgnieder]

I got 97 errors. The first one was "l3kernel too old"

Looks like your version of xfrac is newer than your TeX distribution. Did you install/update it manually?

You should update your TeX distribution. Packages often have dependencies and very often rely on certain versions of other packages which is why manual installations/updates always are dangerous.

Regards

[Singularity]

I recently ran MikTex's "Update (Admin)" process to solve another problem. But I didn't do anything manually. And I might have made the wrong choices in that program. But that's all I did.

[Singularity]

The only reasonable solutions seems to be

Code: Select all

\nicefrac{\bm 1}{\bm 4}

If the top or bottom (numerator/denominator in mathspeak) has more than one character, I assume you will need yet another set of braces

Code: Select all

\nicefrac{\bm{numerator}}{\bm{denominator}}

But then, usually you use regular \frac when you have long top or bottom.