How to make labels non-italicized in tikz-cd?

Question

I have the following LaTeX code:

\tikzcdset{every label/.append style={font=\normalfont\scriptsize}}
$$
\begin{tikzcd}
G\arrow[r, "\alpha"] \arrow[d, "{onto}"] & G'\
 G/N\arrow[r, "\cong"] & I \arrow[u, "{inj.}"']\
\end{tikzcd}.
$$

This gives me this:

All I want to do is make the labels "onto" and "inj." in text font, not math font. That is, I want the tags not italicized.

Welcome to TeX.SE! Can you please -- as usual here -- make your code snippet be compilable? Then we do not have to guess what you are doing ... — Mensch, Nov 12 '21 at 22:02

score 1 · Answer 1 · answered Nov 12 '21 at 22:46

Here there is a MWE. From by comment of the very nice user @Sigur ...using \textup{} as alternative...and never to use double dollar $$...$$ in LaTeX: Why is \[ ... \] preferable to $$ ... $$?

\documentclass[a4paper,12pt]{article}
\usepackage{amsmath,amssymb}
\usepackage{tikz-cd}
\begin{document}
\tikzcdset{every label/.append style={font=\normalfont\scriptsize}}
[\begin{tikzcd}
G\arrow[r, "\alpha"] \arrow[d, "\textup{onto}"] & G'\
G/N\arrow[r, "\cong"] & I \arrow[u, "\textup{inj.}"']
\end{tikzcd}.]
\end{document}

score 1 · Answer 2 · answered Nov 12 '21 at 22:56

Commutative are always in math environment, so if you like to have sin it some normal text, you should use \text command (as mentioned @Sigur in his comment) provided by amsmath package:

\documentclass[margin=3mm, varwidth]{standalone}
\usepackage{amsmath}
\usepackage{tikz-cd}
\begin{document}
    [
\begin{tikzcd}
G\arrow[r, "\alpha"] \arrow[d, "\text{onto}"] & G'\
 G/N\arrow[r, "\cong"] & I \arrow[u, "\text{inj.}"']\
\end{tikzcd}
    ]
\end{document}

Please observe of use \[ and \] instead $$, which are TeX command, not LaTeX.

How to make labels non-italicized in tikz-cd?

2 Answers2