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I have trouble compiling a document. The document compiles when using standard "article" documentclass, but fails using the format for Springer journals.

I narrowed it down to the symbol "|" (the straight bar). Personally I do not use \mid for that (it takes more characters and adds more space around it), but the symbol found on the keyboard. It usually works, but now it doesn't and I don't know why. Do you have any tips?

In order to get a minimal working example: download the Springer template here: https://www.springernature.com/gp/authors/campaigns/latex-author-support

Then simply:

\documentclass[sn-mathphys]{sn-jnl}% Math and Physical Sciences 
\begin{document}
$|\Omega|$ 
\end{document}

The error message:

Missing $ inserted. $|\Omega

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  • Are you sure you don't have an invisible character somewhere in that line? What's the smallest example you can make with | that compiles with article, but not with Springer? Can you post that? Can you also post the error you're getting?
    – Teepeemm
    Oct 26, 2021 at 15:36
  • 4
    tex.stackexchange.com/a/619283/586
    – Torbjørn T.
    Oct 26, 2021 at 15:47
  • Thank you! The question containing the answer did not appear in my searches.
    – Beni Bogosel
    Oct 26, 2021 at 16:06
  • always easier to search for the answer than the question, so @TorbjørnT. had an advantage while searching:-)
    – David Carlisle
    Oct 26, 2021 at 16:10

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