I sometimes give roughly the same course in different languages, and update my TeX notes (if any) each time. Keeping all sets of notes current is a pain (and doesn´t always get done). Does anybody know of a system for keeping and updating the same math document in different languages? The text would vary and the math would be the same, except for eventual changes in order due to differences in sentence structure.
closed as off topic by Felipe Voloch, Mariano Suárez-Alvarez♦, Qiaochu Yuan, Henry Cohn, Andy Putman Mar 28 '12 at 4:16
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First, a parable: A man comes to a doctor and says: Doctor, it hurts when I do THAT. The doctor replies: Well, then don't do THAT!
In this case, why don't you give the lectures in the appropriate language, but keep the notes in, say, English? Unless you give many talks in elementary schools in Albania, I am sure your listeners know how to read English.