3

When using an accented capital letter in a subscript, LaTeX lowers the subscript box:

\documentclass{standalone}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}

\begin{document}

$A_\textup{foo}$ $A_\textup{Cech}$ $A_\textup{Čech}$

\end{document}

Subscripts not vertically aligned

The first two subscripts are vertically aligned, while the last one is lowered because it contains a Č as part of a proper name. In my opinion, this is undesirable if both subscripts appear on the same line.

I know that I can lower the non-accented subscript boxes by using 

A_\text{\vphantom{Č}foo}

However, this stretches out the line too much, and it means a lot of work and ugly code to add a \vphantom to all the subscripts.

Rather, I would like to tell LaTeX to put the Čech-subscript box on the same height as the other ones. Since I'm using a macro for \textup{Čech} anyway, I'm hoping to replace it by something which does the job.

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1 Answer 1

Reset to default
5

You can use \smash:

\documentclass[border = 5pt]{standalone}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}

\begin{document}

$A_\textup{foo}$ $A_\textup{Cech}$ $A_\textup{\smash{Čech}}$

\end{document}

enter image description here

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3
  • 1
    better to smash the whole word, so you don't lose inter-letter kerning Commented Jan 3, 2018 at 18:42
  • 1
    @DavidCarlisle: I didn't know kerning is lost in smashing. I've just tested, and indeed, for this pair, the difference is 0.1 pt, but I can imagine that it will be more for other pairs. Commented Jan 3, 2018 at 19:45
  • 2
    the \smash alone works here, but i'd be tempted to add a \vphantom{C} for insurance. (i tend toward overkill.) Commented Jan 3, 2018 at 20:19

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