I'm beautifying some HW solutions for the upcoming semester, and came across a kerning issue
\documentclass[]{article}
\usepackage{amsmath}
\begin{document}
\[C_{in} \ \ C_{out} \ \ C_{eff}\]
\end{document}
The output:
The "in" and "out" subscripts look fine, but "eff" seems very spread out. Is there a quick fix?
In math-mode you should to use \mathit{...} (slanted} or \mathbf{...} (bold) or normal \mathrm{...} for any type of the text into math formula.
\documentclass{article}
\begin{document}
\[C_{\mathit{in}} \ \ C_{\mathit{out}} \ \ C_{\mathit{eff}}\]
\[C_{\mathrm{in}} \ \ C_{\mathrm{out}} \ \ C_{\mathrm{eff}}\]
\[C_{\mathbf{in}} \ \ C_{\mathbf{out}} \ \ C_{\mathbf{eff}}\]
\end{document}
\text from the amsmath package. But there are different opinions about this: tex.stackexchange.com/questions/70632
Commented
Aug 27, 2018 at 20:51
\operatorname, is good if you ever need to set in, out or eff next to some other identifier. That formats and spaces it like the word log or sin.
effis interpreted ase times f times f, and the same goes forinandout. So you should either use the\mathitby @Sebastiano in the answer, or\mathrm, or\text, etc.