\mathrm not working with \documentclass{elsarticle}

Question

I am trying to type a non-italiac \mu in a inline math mode. The problem is related to the use of the elsarticle class. The normal method using \mathrm{} is not working.

Here is a MWM:

\documentclass[5p,times,hidelinks]{elsarticle}
\begin{document}
    normal math mode $\mu$ \\
    mathrm $\mathrm{\mu}$ \\
\end{document}

That on my computer returns

Possible duplicate of How the get non italic greek letters like siunitx package? — remco, Mar 21 '18 at 06:26
@remco - Note a duplicate, as the information that the elsarticle document class is in use, along with the txfonts package, is relevant. — Mico, Mar 21 '18 at 06:38
@egreg that may be true for text documents but $\mathrm{\mu}$ is how you make an upright mu in Matplotlib's latex renderer. — Austin Downey, Mar 22 '18 at 14:24

Mico · Accepted Answer · 2018-03-21T06:52:21.667

6

Your code can't work because \mathrm is designed to work with Latin, not Greek, letters.

If the elsarticle package is loaded with the option times, the txfonts text and math font package is loaded. To generate upright Greek letters, the txfonts package provides the -up suffix method: $\alphaup$ , $\betaup$ , etc. For the txfonts case, $\muup$ and \si{\micro} (with \si being a macro of the siunitx package) produce the same output.

\documentclass[5p,times,hidelinks]{elsarticle}
\usepackage{siunitx}
\begin{document}
slanted $\mu$ 

upright $\muup$

siunitx \si{\micro}
\end{document}

edited Mar 21 '18 at 06:52

answered Mar 21 '18 at 06:34

Mico

506,678

In case it's not clear: \si{\micro} can be used in both text and math mode. – Mico Mar 21 '18 at 06:50
1

Thanks, it even works for \varepsilonup. – Austin Downey Mar 21 '18 at 07:10
@AustinDowney - Indeed, the \...up suffix method should work with all lowercase and uppercase Greek letters — in math mode, obviously. – Mico Mar 21 '18 at 07:24

\mathrm not working with \documentclass{elsarticle}

1 Answers1