Org Mode will consider markup starting from symbols that are inside $$, \(\), and \[\]. Take, for instance, a file containing the following:
--8<---------------cut here---------------start------------->8--- \(S \Rightarrow^{+} p\) and $p \Rightarrow^{+} q$ \[S \Rightarrow^{+} p\] ... and $p \Rightarrow^{+} q$ --8<---------------cut here---------------end--------------->8--- org-mode will render the pairs of +-signs as strikethrough. Notably, this seems to be the case only in buffers, not in exported Org code (at least, not HTML-exported). This holds for /, _ and * also. Emacs : GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.48, cairo version 1.18.2) of 2025-02-19 Package: Org mode version 9.7.11 (release_9.7.11 @ /usr/share/emacs/31.0.50/lisp/org/) I've tested with 'emacs -q' that this happens in clean Emacs-bundled Org. The particular example above can be worked around by dropping the redundant grouping charactes around the pluses in LaTeX. Thanks in advance, have a lovely day. PS: Apologies if this is a duplicate, I failed to find it, but it seems like something that'd have been reported before. -- Arsen Arsenović