I first thought maybe the problem was coming from Sigil:
I first enter some code in the code display.
Then I check it's fine on the book display and save.
When I return to the code, I often (but not always) see the output and not the code.
For instance, I may see ş in the code, instead of ş
However, I have confirmed that this isn't the problem:
I have dezipped the epub, replaced in a text editor the mathematical symbols with their proper code (as indicated above).
Rezipped, obtaining a proper epub.
But when transferred to the Kobo Aura, these 4 mathematical symbols are not displayed (only a box appears).
How can I solve that?
I'm looking for a solution that would work on any reader, if possible (not just the Kobo's).
Should insert and/or specify a font in my epub?
But then which?
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