Try \renewtheorem{theorem}{... the french word ...}
Thanks, Herbert. But, where should I insert that command?
In the preamble. Layout->Document->Preamble
I did it, but I get the following error message:
LaTeX Error: Missing \begin{document}. \renewtheorem{t heorem}{FrenchTheorem} You're in trouble here. Try typing <return> to proceed. If that doesn't work, type X <return> to quit.
please send a testfile
Herbert, I have enclosed to this e-mail the requested file. Thank you a lot in advance! Paul
write
\newtheorem{theorem}{FrenchTheorem}
into the preamble. I'd forgotten that in amsart the theorem isn't defined.
I tried it with LyX 1.3.3
Herbert
