Dear all, I am having a problem with a child document - I attached the minimal working files to be copied in the same directory. The "master" file contains the child document "Child" (as include). When I try to compile the PDF I get several "Undefined control sequence" error. If I open only the child document "Child", I can compile the PDF with no problem. I tried some solutions I found on the list but with no success so far.
Some more information: - AMS maths package seems to be active in both files - Preamble is empty for both files Any idea on how can I solve the problem? Thanks a lot for your help. Giacomo
master.lyx
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child.lyx
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