I have a question similiar to the post: How to change default for spacing around binary relations?. In particular, I would like to make subscripts look less cramped. According to another post (Increase the space between operator in subscript/superscript), there doesn't appear to be a good way to do this. Currently, I do the following (more or less what the author in the second referenced post suggests).
\documentclass{article}
\newcommand{\ts}[1]{\, #1 \,}
\begin{document}
\[
\sum_{i \ts{=} 1}^{n} a_{i}
\]
\end{document}
However, the \ts command makes the LaTeX harder to read. Does anyone have any ideas about how to get the desired spacing while keeping the LaTeX simple? Ideally, I would just write the following:
\[
\sum_{i=1}^{n} a_{i}
\]
but get some extra space around the equals sign in the subscript of the summation.
\mathchoice
to have additional space. Idea 2: Where is\scriptstyle
defined, which is probably the root of the missing spacing.